Power weapon
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Power weapons are a type of weapon in Warhammer 40,000. Power weapons look just like normal melee weapons, but what makes them actually useful is that they are sheathed with an energy field surrounding the blade. This energy field can in turn slice through even the toughest of armor.
For one reason or another, the glorious Daemon Weapons of Chaos operate like power weapons. Probably for the same reason that allows cheap guardsmen bayonets to be exactly as deadly as chainswords in melee combat (that is to say, bullshit convenience laziness).
8th edition changed this by making chainswords add one to the models attacks with that weapon, which makes logical sense.
Imperial and Chaos Power Weapons
Power Blade
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The little brother of the Power Knife and possibly the smallest known Power Weapon.
Power Blades are small dagger-like Power Weapons used by Imperial forces. They are easily concealable and often used on infiltration missions by assassins and stealth operatives. Power Blades rely on the strength of their built-in power field to maintain the integrity of the thin blade upon a strike.
Due to the fact that Power Knives are meant for Astartes or Custodes hands whilst the Power Blade is known to be usable by regular human forces, it would make sense for the Power Blade to be smaller and concealable.
Power Knife
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Weapons that were crafted as a convenient off-hand carver to compliment a larger power weapon, these weapons were used almost exclusively by the Alpha Legion. They lack the strength and cutting power of a Power Sword, but do have Rending. More importantly, they are relatively cheap and have the Specialist weapon quality, allowing them to be paired with bulkier melee weapons and still grant an extra attack.
More recently, Power Knives are now also wielded by the Adeptus Custodes. Though they appear to be mundane pieces of wargear, each Power Knife has been masterfully crafted and is able to pierce the thickest armor, all the way to its hilt.
Power Pick
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A mining equipment that has been turned into a improvised weapon.
The Power Pick is a type of construction and mining equipment used by the Imperium meant to shatter diamond-hard boulders into sizable chunks. The power field enveloping the the point of the Power Pick is sharp enough to poke deep holes into armored vehicles.
Due to its hard sharp points the Power Pick has been utilized as a weapon by rebel factions, most notably by Genestealer Cults. Aberrants use these simple weapons, which are capable of piercing ceramite when struck hard enough.
On tabletop it is a makeshift Power Axe. You get the D3 damage and AP-2, but you don't get the bonus point of Strength and they're a colossal 16 points each (now only 10 with Chapter Approved). Interestingly enough also a choice for the Neophyte Leader, although with only S3 and 2A it's an utter waste of points and efficiency compared to the cheaper (4 point) power maul, or the free chainsword/cultist knife.
However, it is now updated to allow a free Rending Claw attack for each attack made with the Power Pick.
Crozius Arcanum
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The signature weapon of Chaplains, the Crozius Arcanum is a mace encased in energy that serves as both a symbol of office and a weapon. Counts exactly as a Power Maul in 7th ed. The Crozius Arcanum itself is a staff of medium length, topped with the Imperial Aquila or symbols, such as winged skeletons or skulls. A few versions use iconography from the Chapter they belong to. The Salamanders, for instance, use the smith's hammer or a dragon's head. Ortan Cassius, Master of Sanctity of the Ultramarines, has fashioned his Crozius Arcanum after a Tyranid head, in remembrance of the Battle for Macragge.
Although it is a bludgeoning weapon, certain 40k authors and artists sometimes forget about that, and simply turned the Arcanum into a slicing weapon. Enjoy envisioning a giant club bisecting people in two.
The Traitor equivalent, the Dark Apostle, uses a functionally identical item, though twisted by Chaos, called an Accursed Crozius. Which actually resembles a maul or a giant mace.
A Shock Mace is an older-model power weapon favored by the traitor legions. It is functionally a Crozius Arcanum, but without the status symbol.
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Accursed Crozius
Power Sword
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In a nutshell, the power sword is an example of power weapon technology applied to a sword. It's easily the most common power weapon (the Space Marine video game only said otherwise so as not to make players feel cheated by the DLC they just bought), and is used not only by the Space Marines, but by the Commissariat, Inquisition, and Imperial Guard, who, likewise, often issue it to Sergeants and Officers.
The Emperor of Mankind and most of the Primarchs who had swords used Power Swords. As of 6th edition, Power Swords are now AP3, screwing over many units and characters who have swords modeled on, such as Mephiston, resulting in Terminators becoming absurdly hard to kill in assaults. Now, with armour modifiers, power swords will be pretty useful against Terminators again since AP-3 brings their save down to a 5+.
Relic Blade
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A Relic Blade is a large Power Weapon often resembling a sword or axe surrounded by an power field for shearing through armour. Due to their size and weight these weapons must be wielded two-handed, but are of immense importance to the Space Marines who carry them. Many have their origins in the dark days of the Horus Heresy, while others were created many centuries later as tribute to other momentous events.
A two-handed power sword, which on the tabletop results in +2S (so S+2 AP3) and two-handed (can't benefit from a second weapon, although curiously there is no ban on taking two items that both do this, which currently only means you can wield a relic blade and a storm shield). For some reason this also applies to officers in Terminator armor. Despite the fluff stating that they can use weapons that other Astartes can't.
Don't bother with Relic Blade upgrades for Captains and Chapter Master if a melee based Chapter Relic has better stats. Which they usually will. It is a decent upgrade if the Chapter Relic replaces a ranged weapon, armor or Storm Shield. Honor Guards and Vanguard Sergeants can also use them. Though it is a huge waste on the latter if he doesn't have a Storm Shield.
Sentinel Blade
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A super special power weapon for those Special golden boys.
Sentinel Blades are power broadswords, that are wielded by the Adeptus Custodes and are of such daunting size, that their hilts are flanked with Bolt Casters of exceptionally fine craftsmanship. It is a testament to the sheer strength of the Custodes, that they can wield these mighty swords with the same ease a lesser man might swing a cavalry sabre.
As its name implied, Sentinel Guards are the primary users of these weapons.
Power Axe
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Power Axes are single or double-bladed axes with their edges sheathed in energy. Power Axes are especially favored by the Space Wolves, Chaos Lords and Techpriests of the Adeptus Mechanicus.
On the tabletop, Power Axes are AP2, +1S and Unwieldy, making your unit strike at I1. This is probably going to be your only way to cheaply kill Terminators in assault, if they haven't overwatched your guys to death or happen to be using Thunder Hammers and Storm Shields.
In 8th Edition, they're the opposite to Power Mauls by being +1S, AP-2 (making MEQ armour saves from 3+ to 5+ and TEQs 2+ to 4+) and, most important, they're no longer unwieldy! Pretty cheap too, being 1 more point than Power Swords and Mauls!
Frost Axe
A very special Power Axe unlike any other. A Frost Axe is a master-crafted melee weapon, used exclusively by the warriors of the Space Wolves Chapter of Space Marines, and is similar in many ways to more common Power Weapons of similar design (doesn't stop Lexicanum for putting it in the Chain weapon category....for some reason).
Each Frost Axe is considered among some of the most prized weapons of the Chapter, and each is crafted by a master Iron Priest. The cutting edge of Frost Axes are often made from energised diamond, giving them the appearance of blades forged from purest ice. Other times, for those with the courage and skill to slay a mighty miles-long Kraken from the vast oceans depths of Fenris, the edge may be instead studded with the beast's diamond-hard teeth. Regardless of what the details of their design, all Frost Axes are power weapons of consummate lethality.
Now if only they could freeze enemies like its name implies....
Power Maul
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Power Mauls are whatever form of bashin' stick or stave a Space Marine, human or xenos supreme race's can get their hands on and turn into a relatively hi-tech weapon. If you can conceivably clobber someone over the head with it, it doesn't look heavy enough to be a Thunder Hammer, and it has room to tape a disruption field generator on somewhere along the haft, it's probably a Power Maul.
Crunch-wise, Power Mauls are AP4, +2 Str and Concussive. This means they bounce off MEQs (but wound on a 2+, at least), and when wielded by aforementioned MEQs turn any variety of Spess Pansy or Humie not wearing power armor into meat slurry, multiple wounds be damned. Great for challenges against the aforementioned T3 squishies.
This edition still keeps their 2+ Str but their AP-1 (opposite stats to the Power Axe), making em able to wound most things (Read: Toughness 4 models) on a 3+ and reducing their armour saves (so MEQ have their armour saves on a 4+). Ideal for tackling squishy models!
Power Scythes
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A form of Power Weapon shaped like a scythe. Power Scythes were generally unwieldy and never caught on with the Imperial military outside the Legiones Astartes, and even then they were only popular with the Death Guard, who used a massive type of Power Scythe known as Manreapers. Even in that particular case, they were only used by their Primarch Mortarion, some officers (like First Captain Calas Typhon), and the Deathshroud Terminators.
Crunch wise they're power axes with reaping blow instead of unwieldy, giving the wielder +1 attack provided there is an enemy in base contact at the cost -1 I. As such, they're nice since they hit before other AP2 weapons. Because of its association with the Death Guard, it should surprise no one that the Departmento Munitorum cancelled all orders for Power Scythes in M34 due to their complete lack of popularity. Whether or not the Adeptus Mechanicus still have the STC printouts are unknown, but knowing the AdMech...
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Deathshroud holding his infamous weapon.
Power Fist
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Also known as big-metal-death-fists-of-doom, and one of the most iconic weapons of 40k, Power Fists are massive gauntlets which are encased within an energy field that breaks down molecular bonds when activated. They are intended to be worn with Terminator armour, but frequently you find people wearing Power Armour, or even NOT wearing Power Anything, wielding Power Fists. The Emperor of Mankind had a power fist on his left hand, which he used to famously put Leman Russ in his place. Russ later said that the subsequent headache was from the drinking contest they had.
They are commonly used as an anti-armor weapon. Yes, you heard correctly. Brave bastards will punch tanks until they explode. That's how fucking badass this universe is.
Orks, in their looting tendencies, have taken to mimicking Power Fists as Power Klaws, which are like Power Fists except that they usually have 2-4 digits, and have massive grabbing blade-claws instead of articulated fingers. Commissar Yarrick famously killed an Ork and used his Power Klaw to replace his severed forearm. Why the Commissariat has not censured him for using xenos weapons is not entirely clear, but they probably let it slide because he's such a badass. Still, one must wonder how he goes to sleep, takes a shower, or masturbates with that thing on.
Some variants of Power Fist are called Power Claws, which are basically Power Fists with the digits ending in razor sharp claws. You more frequently see them among Chaos Space Marines, but occasionally the Raven Guard or Space Wolves use them. The infamous Talon of Horus, used by Horus Lupercal to kill Sanguinius and critically injure the Emperor, and later looted by Ezekyle Abaddon, is a Power Claw with an infamous history. Most of these, however, would technically be considered a form of Lightning Claws (see below).
On the tabletop, Power Fists/Klaws double the user's strength, but makes him strike at I1. A popular tactic was to use it to instagib enemy ICs in assault by hiding the Fister behind other expendable troops, allocating wounds onto them instead. However, with 6th edition, this tactic is mostly rendered moot as now ICs and characters can issue challenges, so the Power Fister will most likely fall in battle should the opponent strike and kill him first or see that both get killed off. New wound allocation rules also make the Fister more likely to have a wound allocated to him, but that is slightly mitigated by the Look Out Sir! rule. Dreadnoughts have no such penalty to initiative or benefit of LOS! as they are walking death machines crewed by a crippled vet, yet are strangely not characters.
In 7th edition, challenges can only be issued to models in combat (in attacking distance), and both sides get 3" pile in at their initiative step. Thusly, if you plan carefully you can have the powerfister 6" away from the combat, have the enemy close in and unable to challenge, and then pile in onto combat at initiative step 1.
In 8 edition, much like the Power Axe, they've lost the Unwieldy rule and still get their Str x 2 bonus; however, they're now AP-3 and D3, they also now subtract hits by -1 (so on a Space Marine Sgt, they hit on 4+).
There has been some speculation on how successful it would be to incorporate Power Fists into truly epic highfives and brofists, but the AdMech has made it perfectly clear that to do so would be tech-heresy.
Chainfist
For information on the combi-weapon version of the Power Fist, see Chainfist.
Lightning Claw
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Lightning Claws are a quartet of razor-sharp claws affixed to a gauntlet, each blade of which is a small power weapon. The claws had different designs pre- and post-Heresy, but they mostly function the same.
The pre-heresy design of the Lightning claws is that instead of blades being placed on the dorsal palm, the fingers on the glove are turned into power blades, giving the user a rather terrifying look. This is the wide-spread model that Chaos marines use since it's what they had on hand (literally) when they fell back to the Eye of Terror.
The current design of Lightning claws are 3-4 smaller power blades that are placed above the weapon's dorsal palm plating, akin to X-men's Wolverine. This design, although considered totally uncool when compared to the old Power Talons, gives the user the advantage of still having articulated fingers, albeit with digits that are still powerfist-sized, though some bad ass imperial guard commanders have been seen with lightning claws for no fluff-explained reason. Possibly just an oversight that got grandfathered into the later games but it still looks awesome so we'll let it slide. Though two of those guys are from the same regiment (Cadian 412th) so maybe it's just a quirky tradition of that one regiment.
And then there are some gems like Lugft Huron's which have both dorsal and finger claws.
They are normally used in pairs. Favored by Terminators and Chaos Raptors, Lightning Claws are a bit unwieldy, but are much more likely to land a damaging hit on a target when used by a trained user (in tabletop, this translates to re-rolling failed to-wound rolls). They are also AP3, so it is now pointless to use them against Terminators, but they will mince up MEQs and blobs. The Raven Guard in particular often employ Lightning Claws. Always remember to say "snikt" when using them and incessantly refer to your enemies as "bub" and to take them off before attempting to masturbate or pick your nose. Or don't.
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The Finger Claw variant
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Huron's double claw
Power Lance
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A weapon used almost exclusively by the White Scars, Power Lances are energy-sheathed lances which the White Scars use in charging their opponents on their bikes. You can imagine the results.
Tabletop-wise, Power Lances are AP3 +1S on the charge but become AP4 and default strength in following assault phases. Since few box sets come with Power Lance bits, a lot of converting is to be done if you want to kit out your models with Power Lances. They're pretty awful in the hands of anything without Hit And Run. Honestly, they're pretty awful even in the hands of anything with Hit and Run. If you want the +1S, use a power axe. If you want AP3, use a power sword. If you want high strength and don't care about the AP, use a power maul. The only round Power Lances are better than the others is the charging round, so only take them if you think you can win a fight in the first round. If not then stick to the other choices.
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Alternate view
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Spear of Vulkan
Power Halberd
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A large power weapon in the shape of a glaive. Though a functional weapon, Power Halberds are largely ceremonial weapons used by Space Marine Honour Guards when on sentry duty, although the White Scars will use them in combat.
The Custodes also used power halberds with attached bolters, but those weapons are to regular power halberds what Custodes are to regular marines. Not wanting to get left behind, CM Asterion Moloc "acquired" one of those and slapped a freaking lascannon onto it. Doesn't have an actual model because GW is lazy.
Guardian Spear
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The iconic weapon of the Custodian Guard.
Guardian Spears are halberd-like power weapons so heavy that it would take several ordinary men to lift it and incorporating a ranged weapon at its tip. The weapon's powerful ranged and close combat duality complemented the fighting style of this bodyguard force, giving them good capabilities in both close combat and at a distance. In battle, Custodes spin these weapons in great arcs, slaying enemies with each strike be it in melee combat or from afar.
As symbol of their roles as sentinel, Deathwatch Watch Masters are also given Guardian Spears.
The bigger version of the Guardian Spear is the Dreadspear.
Thunder Hammer
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Big war hammers (40k) that smash anything they touch, and popularly paired with Storm Shields. Unlike other power weapons, Thunder Hammers only activate their energy fields upon contact with a target. This works like a flash capacitor, and utterly explodes whatever Thunder Hammers hit - in editions long past this meant they always scored a wound whenever they hit, no roll was needed. Comes in one-handed and two-handed varieties, but both functionally are the same weapon stat-wise. Particularly common among Terminators, although the Salamanders love it (going with Vulkan's training as a blacksmith and the artificer themes of the Promethean Creed).
Gameplay wise, they're basically the same as Powerfists, except when attacking vehicles they will at a minimum get a "Crew Shaken" if they glance or penetrate, in addition to whatever else they roll on vehicle destruction. From 6th ed onwards, the special effect was changed to the "Concussive" rule; any target that takes a wound (but survives) is reduced to Initiative 1 till the end of the next assault phase, simulating disorientation from the explosive impact, making it very effective even against big gribblies that are tough enough to avoid Instant Death.
Fun fact: Captains could not use thunder hammers without wearing terminator until Dawn of War proved how awesome it looked. 8th edition removed the concussive rule and the low Initiative, replacing them with minus 1 to hit 2x str AP3 and 3 damage flat.
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Alternate view
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Horus Heresy era
Heavy Thunder Hammer
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These monstrosities are used by the Deathwatch for when a regular thunder hammer won't do the job. Being two-handed, you sacrifice the ability to wield a shield for the chance to one-shot most high-value targets.
These weapons are equipped with two heads, each swathed in a powerful disruptor field. Heavy Thunder Hammers are extremely powerful weapons, able to smash the midsection of a Carnifex in twain and turn tanks into crumpled metal.
Equip your Deathwatch with one of these and he would be happy playing galactic whack-a-mole.
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Its hammer time!
Dreadnought Power Fist
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A Power Fist suited specifically for Dreadnought needs. Dreadnought Power Fists comes in all shapes and sizes but they all do one thing, fucking shit up.
The most common pattern is the Dreadnought Mark V Power Fist. The weapon takes the form of a massive metal gauntlet and features four clamp-like fingers that can open and close. The fist can be used to smash enemy units and vehicles and grab enemy units with its clamps. The Mark V Dreadnought Power Fist can be armed with an underslung Storm Bolter or Heavy Flamer.
Another variant is the Venerable Dreadnought Power Fist. These Master Crafted Weapons are markedly more advanced than their basic counterparts, and feature four fully articulated and jointed fingers, allowing a greater range of movement than the clamps or bladed fingers of other Castraferrum Dreadnoughts, in a sense, it is essentially the Contemptor Dreadnought Power Fist in all but name. The next variant is the Ironclad Dreadnought Power Fist. These Power Fists feature larger "finger" clamps and thicker armor. The Ironclad Dreadnought Power Fist is equipped with an under-slung Storm Bolter or Heavy Flamer. Additionally there is the Blood Angels' Blood Fists which feature longer servo-manipulator "fingers" than the standard Castraferrum Dreadnought Power Fist and are designed to rip and tear through flesh, bone and armour more swiftly. The newest variant of the Dreadnought Power Fist is the NuMarines Redemptor Fist. A Redemptor Fist is a massive, articulated Dreadnought-sized Power Fist of advanced design used by Primaris Space Marine Redemptor Dreadnoughts as a primary melee weapon on one of their two weapon arms.
Dreadnought Power Claw
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Similar to the Dreadnought Power Fist, the Power Claw has a lot of variants.
The weapon takes the form of a massive metal gauntlet and features four blade-like fingers that can open and close. The fist can be used to smash enemy units and vehicles and tear through enemy units with its bladed fingers. There are simply way too many Power Claws to be considered reasonable. Seriously look at this shit. We got the typical Mark IV Power Claw you see on the right as well as the Contemptor Power Claw. There is the Blood Angels' Blood Talon (and its Contemptor versions) which closely resemble a Lightning Claw in their design, featuring four energized adamantium claws that can pincer down on an enemy target or slash through nearly an entire enemy infantry squad with ease. There's the Salamander's more roasty Dreadfire Fist with a built-in Dreadfire Heavy Flamers. The Space Wolves Great Wolf Claw which are enchanted by powerful runes to further augment their destructive potential.
Tl;dr, there is way too many versions and lets not even get into Chaos or Ork territory.
Power Scourge
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A Chaos exclusive weapon.
Power Scourges are Chaos Space Marine Power Weapons. These weapons consist of a set of jointed metal arms tipped with blades that crackle with barely contained energy. In battle, the Power Scourge lashes wildly, cutting anything that gets close.
The large and unwieldy nature of these weapons means that the Power Scourge is only usable on Dreadnoughts, Helbrute, Maulerfiend and a assortment of known and unknown Daemon Engines.
Back in the old days, normal Dreadnoughts could also get access to these weapons, but they look more dated, goofy and ridiculous than the more updated counterparts.
In a nutshell, Chaos Rape Tentacles. Appropriate for the Emperor's Children for all your Hentai needs.
Fenrisian Great Axe
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When the Space Wolves can't get enough Viking, they equip their Dreadnoughts with these fuckhueg Power Axes.
Fenrisian Great Axes are massive Power Weapons that can only be hefted by a Dreadnought. However, it is currently unknown whether this axe have a cool frost affects like the Helfrost weapons. It would be cool if GW implements this however.
Each of these great axes are forged in the heart of the Fang by the Space Wolves' master artificers. Each is longer than a man is tall and so heavy that only a Dreadnought could ever use or even lift.
A Dreadnought, armed with such a weapon, can cleave a bloody path through many foes at once.
Galatus Warblade
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Think the Sentinel Blade on steroids or a Sentinel Blade large enough to be wielded by a Dreadnought.
The Galatus Warblade is a massive Dreadnought Close Combat Weapon used by Custodes Contemptor-Galatus Dreadnoughts. These blades are made of the highest materials and could cut the armor of superheavy vehicles with contemptuous ease.
The blade has a built-in Infernus Incinerator just in case you really want to make sure that the targeted enemy is completely and utterly neutralized.
Achillus Dreadspear
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The Achillus Dreadspear or simply known as the Dreadspear is a Dreadnought-sized version of the Guardian Spear that was widely used by the Legio Custodes. Wielded by the fearsome Contemptor-Achillus Dreadnoughts, these massive spears were capable of devastating enemy infantry and vehicles.
The Achillus Dreadspear features an in-built Corvae Pattern Las-pulser to fire upon enemies at range, but nobody really bother with that as the Dreadnought is fast enough to charge through almost anything smaller than itself.
Cerastus Shock Lance
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A very long power weapon for the Imperial Knights.
The Cerastus Shock Lance is a type of Titan Power Lance wielded by Knight Lancer walkers. This magneto-hydraulic power size of prodigious size has a disruption field which may also be projected as a powerful electromagnetic plasma blast over short ranges.
Crunch wise, the Shock Lance is a combi-melee/range weapon that gives it extra initiative when it charges into combat, its shooting mode is basically a 18" range 6-shot plasma rifle that concusses its targets. The Shock Lance is thus, very versatile and can catch unsurprising enemies (even fliers!) off guard.
Thunderstrike Gauntlet
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The Thunderstrike Gauntlet is a smaller type of Titan power fist carried by Imperial Knights. Crackling with destructive energies, the Thunderstrike Gauntlet allows the Knight to rip apart its enemy, even tearing limbs off of Titans.
When used as a bludgeon instrument the gauntlet releases a deafening thunderclap upon impact, so powerful it is capable of hurling Battle Tanks through the air to land amongst the enemy and crush them beneath the vehicle's weight.
On tabletop the Gauntlet is a S16/AP-4/D6. Higher strength and AP in exchange for -1 to hit and a meager +5 points. This excels at pretty much the same things the Inferno cannon does; anything T7/3+ or better. Plus, you get the lulzy spectacle of chucking a dead razorback at his warlord for extra mortal wounds.
The Reaver Power Fist is basically this but upscaled.
Its much bigger brother can be found on fucking Reaver Titans. This can be read below.
Titan Power Fist
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The largest Imperial Power Fists and the proverbial One Punch Weapon.
Essentially the Thunderstrike Gauntlet's bigger brother.
These giant weapons can literally do the equivalent of a power fisting on a truly Titanic scale. The most common users are Reaver Titans, as they provide the best medium between speed and durability.
So far, there is no sources on whether a Warlord is able to get their equivalents.
On tabletop the Power Fist is a Sx2 AP-5 10 D. Has a similar trick to the Knights' Thunderstrike Gauntlet, but on a much bigger scale obviously. For extra Lulz, on a 4+ you can throw whatever you killed at that unit and inflict D6 mortal wounds on them.
Titan Power Claw
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The largest Imperial Power Claws.
Titan Power Claws are giant fuckoff weapons against other superheavies and Titans that got too close for comfort. These things can rip open fortresses like tin cans and swipe a Titan's head off in one good blow.
They come in two varieties, the Warlord Arioch Power Claws with a in-built Vulcan Mega-Bolter and the smaller Reaver Power Claws.
On tabletop, the Arioch is a goddamn rape fist. At Sx2 (that's S32, by the way) AP-5 D12, and has the same throwing rule as the Reaver's Power Fist. Doesn't even harm your firepower since it comes with a built-in Vulcan Mega Bolter. Yes, that means the ultimate anti tank weapon is also the ultimate anti infantry weapon. Notably, its insanely high strength makes it the only weapon capable of wounding another Warlord on a 2+. Enjoy power fingering enemy Titans in the asshole.
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Reaver variant
Eldar Power Weapons
The Eldar have the knowledge to create power weapons as well: theirs are of a lighter, more elegant design, and are used almost exclusively by the Howling Banshee aspect warriors.
Diresword
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The Elfdar analogue of the Imperium's Relic Sword.
A Power Sword with a twist used by an Exarch of the Dire Avengers. In addition to being a power weapon, a Diresword is also a spirit stone, housing a great Exarch of the past. When connecting with the target, the Eldar soul within will attempt to destroy the opponent's mind.
All Direswords are modeled after the legendary Sword of Asur, the first of its kind, carried by the first Phoenix Lord; Asurmen.
Eldar Power Sword
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The Eldar's analogue of the regular Power Sword.
Used by the Howling Banshees, these weapons are of a more elegant design than their Imperial counterparts: they have a single edge and have a curve at the tip of the blade. It is a single-bladed sword that is great for slicing and carving flesh and bone alike.
Though being lighter, these weapons have more metal at the tip, allowing them to strike just as hard as an Imperial power weapon.
Mirrorswords
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Basically an Eldar Force Falchion.
Somewhat smaller than, but otherwise identical to the regular power swords, these blades are used in pairs by the Exarchs of the Howling Banshees. The style that they are used in allows the wielder to deliver a far higher amount of blows on a target than with regular power swords.
They are part of an ambidextrous sword-art using paired blades.
Executioner
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A glaive, this power weapon greatly enhances the power behind the user's blows, allowing the warrior to slice its enemies in half with ease. Exarchs of the Dire Avengers aspect use a similar, but lighter weapon for superior range over their enemies.
The Executioner is not standardized and thus, it takes many forms - that of a heavy spear, a rune-encrusted sword or a great black scythe. Whatever its form, it is one of the most deadly hand to hand power weapons.
Powerblades
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Not to be confused with the Imperium's Power Blade (Seriously GW, fix your god damn names).
Attached to the user's forearms, these weapons grant the wielder the advantages of a power weapon while allowing the user to keep his hands free. Used mainly by Exarchs of the Warp Spiders aspect.
In earlier editions powerblades could be wielded by Exarchs of other Aspects - most notably by the Dark Reapers, who wielded them in conjunction with their heavy weapons to give them both ranged and close-quarters abilities.
Scorpion's Claw
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Scorpion's Claw is an Eldar version of a power fist, except it doesn't slow its wielder (in game terms it doesn't have the Unwieldy or Special Weapon rules). Exarchs of the Striking Scorpions wear this on one hand while holding a chainsword in the other. It's a big claw with a shuriken pistol inside.
Basically, it is far more utilitarian and versatile than any other races Power Fists or Power Claws.
On tabletop, it is a Sx2 (S6) AP-3 claw that carves away D3 wounds per smack, complemented by a built-in Shuriken Catapult that isn't named that. It also will cost the Exarch his Shuriken Pistol, so he won't be able to contribute any ranged firepower if he's tied up in melee.
Eldar Power Lance
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The Eldar have their own Power Spears in the form of Lances. They essentially function the same in all retrospects. They have obviously a longer reach and works better two handed than one handed. Other than that, it is pretty meh.
Both the Craftworld Eldar and Dark Eldar utilize Power Lances. The DEldar is obviously more edgier looking.
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Dark Eldar variant
Phantom Power Glaive
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A giant Power Weapon for the Eldar to combat enemy Titans.
Known also as the Ashuna-Valcry'le, roughly translated as 'Sleepless Harbinger of Destruction', the Phantom Power Glaive is one of the less-common weapons wielded by an Eldar Phantom Titan and could slice superheavy machines into sizable chunks. In addition to its deadly close combat blades the weapon also mounts two Starcannons.
One must wonder why the Imperium never thought of creating a Titan-scale Power Sword.
Dark Eldar Power Weapons
While many of the Dark Eldar's weapons have only cosmetic differences to those of Eldar design, there are a few that are more unique
Demiklaive
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Baby Klaives essentially.
Demiklaves are small Dark Eldar melee weapons. Some Incubi sects prefer demiklaives over the Klaive. Demiklaives are two power swords which can be wielded as two close combat swords or as one mighty weapon. Changing from one weapon into two is so easy for Klaivex that they can do it in the midst of battle.
Perhaps the best known Dark Eldar wielding demiklaives is Drazhar, the Master of Blades.
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Drazhar's Demiklaives
Klaive
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These massive two-handed swords are the staple weapon of the Incubus and are regarded by them as "The ultimate weapon". Every Klaive is a masterpiece of a weapon. They are perfectly balanced and in the right hands they are also extreme instruments of death. Klaives are also power weapons on their own and because of that can even cleave through Space Marine power armor.
These enormous cleavers are AP2 and +1S while letting you strike at full I. Some squad leaders get the even deadlier Demi-Klaives. They grant an additional S normally, but you can choose to use them as +0S and +2A.
Agoniser
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THE BDSM weapon.
A weapon befitting its name, this deadly whip drives the senses of the victim haywire with pain. It is not standardized and therefore, come in many forms, such as whips or gauntlets, but they are designed to attach themselves to the victim's nervous system, take control of it and inflict immense pain which can disable or kill the victim.
The size of the creature doesn't matter and often the larger the creature, the greater the potential for pain-infliction. Agonisers have the ability to harm vehicles as well, potentially disabling the crew or disrupting the vehicle's systems. It grants AP3 and wounds the enemies on a 4+, regardless of toughness.
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Whip it good!
Huskblade
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A very weird weapon. Possibly one of the weirdest weapons in the DEldar armory and that's saying something.
Carved from Desiccator bone, this horrid saber drains the moisture out of its victims in a fraction of a second, leaving nothing behind but a shriveled corpse. How this blade sucks the moisture of its victims despite being a sharpened bone I have no idea. Shit is so goddamned weird.
It grants AP3 and Instant Death. Now known as the Suckblade.
Djin Blade
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A blade that looks annoyingly similiar to the Husk Blade although descriptions of it is different (its described as taking the form of polished crystal with a scowling bestial face upon its hilt).
Only available to the most elite of nobles, a Djin blade houses the soul of a fallen Eldar. This grants AP3 and +2A, but on a roll of doubles on the extra attacks the soul rebels and the attacks target the user.
Punisher
A Dark Eldar Force Halberd or any Halberd equivelents.
The Punisher is a close combat weapon used by Dark Eldar Incubi. It is large and unwieldy but incorporates a shock field generator which is beyond the ability of the Imperium to replicate. They are often easily alterable to suit the user with an extendable shaft and a monomolecular blade attached to deliver the shock.
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An Incubus holding a Punisher (and wearing what probably is a "Tormentor Helmet")
Harlequin Power Weapons
In addition to the below weapons, the Harlequins also have access to the Eldar Power Sword mentioned above.
Harlequin's Caress
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The Harlequin's Caress is a bracer that generates a power field around the user's hand, resulting in what essentially is an extremely lightweight Power Fist. A Harlequin armed with a Caress is easily capable of reaching into his opponent's chest and plucking out his heart.
On tabletop, the Harlequin's Caress is the middle child of the three primary Harlequin close combat weapons, which costs 7 points and grants +2S and AP-2. While there are certain unit types against which it is the better choice (this is explored more below), in practice it is never so much better than its cost is justified over the Embrace.
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Imma rip your heart out like fucking Scorpion
Zephyrglaive
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The Zephyrglaive is a power polearm used by Harlequin Skyweavers. Each Zephyrglaive is perfectly weighted and individually balanced to its wielder. Its blade enveloped by a molecular dissonanse field and it is indeed a lethal weapon for the aerial murder.
Crunch-wise. It is a 1S AP-2 weapon with 2 Damage. Combined with the extremely high speed of Skyweavers, it's a useful weapon for backfield assaults against 2W models, letting them quickly wipe out skulking units of Hellblasters and the like.
Ork Power Weapons
Power Klaw
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The Orks saw the umies and their power claws and they answered with their own.
It is similar in characteristics to an Imperial Power Fist, being an armored, powered gauntlet, strapped to an Ork's arm with a piston-driven pincer comprising two to three snapping blades. These are sheathed in energy the same way a Power Fist is, and so can effortlessly rip through any armor, tearing any enemy into bloody paste. It is particularly effective against vehicles.
These weapons are amongst the biggest and choppiest an Ork can possess and often serve as symbol of status as well as a weapon. As such, many of them are owned by Warbosses or by particularly brutish Nobs, in which hands Power Klaws become even more effective, due to their skill and strength. Orks often amputate their own arms, taking the weapon as an augmentic implant. Power Klaws are most often found incorporated into Mega Armour.
Tau Power Weapons
Onager Gauntlet
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Basically a Tau powerfist equivalent, but can only be used by Crisis-type battlesuits. Often jokingly called "donkey punch" by a players, and sometimes modeled on a suit's legs instead of hands, since "onager" is Latin for donkey (although it was also the name of a Roman catapult).
It was designed to battle Imperial tanks after the Tau realized that those crazy Gue'la can send in so many MEHTUL BAWKSES in a single engagement that Crisis teams would exhaust their ammunition supplies and the Guard would still have tanks rolling everywhere. Despite being very successfully tested during the Damocles Crusade, where a 12-man team of Crisis suits managed to falcon punch dozens of Imperial tanks into scrap, it is still undergoing field tests and is treated as an experimental system, due to the fact that the casualty rate of trying to give tanks a proper fisting in the middle of a war was too damn high.
Of the original 12 suits who tested the weapon; only Commander Bravestorm of Farsight's battlesuit retinue survived....kind of. Although Bravestorm lived, his body was too badly wounded after his Crisis suit was critically damaged at one point that he had to be permanently entombed into his Crisis suit just to survive.
Necron Power Weapons
The Necron only seem to have one Power weapon available. Not like that's a bad thing since the Crons just have much better equipment around.
Hyperphase Sword
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A Hyperphase Sword is a Necron melee weapon whose energy blade vibrates across dimensional states and can easily slice through armor and flesh to sever the vital organs within. A Hyperphase Sword can be considered an advanced type of Power Weapon. Hyperphase Swords are found exclusively as part of the armories of Necron royals, such as Necron Overlords, Necron Lords, Necron Destroyer Lords, and their favoured Lychguards.
Gallery
Imperial
Dreadnought Power Fist
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Mark V (model) -
Ironclad variant (model) -
Ironclad variant -
Venerable variant -
Contemptor variant -
Blood Fist -
Redemptor variant
Dreadnought Power Claw
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A Lightning Claw-style variant
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Contemptor variant -
Dreadfire Fist -
Great Wolf Claw -
Blood Talon -
Death Company variant Blood Talons
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Mark IV -
Contemptor variant -
Dreadfire Fist -
Great Wolf Claw
Eldar
Executioner
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Howling Banshee's -
Dire Avenger's -
Jain Zar's -
Maugan Ra's
Miscellaneous
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Commissariat-approved use of Power Fists is to inspire the troops.
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Beakie Raven Guard love Lightning Claws.
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Pictured: Actually a force halberd.