Editing Warhammer 40,000/9th Edition Tactics/Grey Knights (section)

===HQ===
GK have a '''very''' crowded  HQ roster, which makes it hard to pick what you ''need,'' espcially with their unique limitations: most of them are locked into Terminator armor (so having atrocious movement of 5); while ''everyone'' is a Psyker, unless they're a Librarian or a named HQ, they'll also be locked into a single known spell/cast, meaning theyre less swiss army knives and more like single purpose tools. GMNDKs are autotakes, and Librarians/named HQs for multicasting flexibility, but after that, take a good hard look at what you want and can do before you pay another strike squads worth in points for another HQ.
*Arks of Omen now lets you take an extra Grand Master, which now means double GMNDK+Kaldor Draigo lists are now possible again at the cost of a CP.

*'''[[Grand Master]]:''' The Grey Knight equivalent of a marine company captain. 135pts nets you a W6, A6 Terminator Character with Rites of Battle allowing all friendly {{W40kKeyword|GREY KNIGHTS}} units within 6" to re-roll hit rolls of 1. He can cast and deny one psychic power, and knows Smite + two Dominus psychic powers. Incinerators and psilencers only cost 5pts, and hammers and psycannons cost 10pts. 
** Frankly, you're better off getting at least Voldus (150pts, {{W40kKeyword|Wardmakers}} only) or Draigo (180pts) if you can afford him. Both have S8 and D3 melee weapons without hit penalties. Voldus can cast and deny two times, and knows three Dominus psychic powers. Draigo has the 8th edition storm shield (3++ invulnerable) and Chapter Master ability (one Grey Knight CORE or CHARACTER unit within 6" can re-roll all hit rolls). The advantages the nameless version has over those two is the ability to take your choice of a Warlord Trait (or two with pre-game strat), a special weapon instead of the master-crafted storm bolter, a Relic and a Wisdom of the Prognosticars upgrade.

*'''Grand Master in Nemesis Dreadknight:''' 160pts base, expect it to be closer to 200-220pts after buying the options. WS2+, S6, T6, Sv2+/4++/5+++(vs MW), but comes with a degrading statline; M9"/7"/5", BS2+/3+/4+, A6/5/4. The movement degradation is negligible and incinerators don't care about BS, but the loss of A's hurts if you get dinged before you can get stuck in with melee. As a {{W40kKeyword|CHARACTER}} with over W10 he doesn't get Character protection, but he's an ideal candidate for the First to the Fray Warlord Trait and unlike most codexes, the Grey Knights relics aren't barred from {{W40kKeyword|vehicle}} units. He still retains the Rites of Battle Aura and the psychic prowess of a regular Grand Master. You can spend 10pts to grant him a teleporter for stratagem use - he can deep strike as standard. Comes stock with two dreadfists (Sx2, AP-3, D2), one of which can be replaced with a nemesis greatsword for +15pts (with two profiles: S+4, AP-3, Dd6 or SUser, AP-2, D2, roll 2 hit-rolls for each A) or a nemesis greathammer for +10pts (Sx2, AP-4, D3+3, -1 to hit rolls). You have two slots for optional guns; the 15pts heavy incinerator (12", heavy '''2d6''', S6, AP-1, D1, automatically hits), the 20pts gatling psilencer (24", heavy 12, S5, AP-1, D1), or the 20pts heavy psycannon (24", heavy 6, S8, AP-2, D2). 
** The heavy psycannon and gatling psilencer are generally your best options as Tide of Convergence buffs them to 30" range and they make the psychic onslought stratagem amazing value.

*'''[[Brother-Captain]]:''' Now provides Lieutenant re-rolls of 1's to wound. Also has W6 and A5 making him pretty respectable alongside the Terminator Character statline. His greatest utility lies in providing +1 to cast for friendly {{W40kKeyword|<BROTHERHOOD>}} GK psykers within 6" with the 2CP Psychic Locus Strat. 110pts, +5pts for an incinerator or psilencer, +10pts for a hammer or psycannon. He casts and denies one psychic power, and knows smite and one Dominus power.
** The Finest Hour Stratagem will add 3" (for a total of 9") to the range of his Psychic Locus ability. This costs 3CP a pop, but you can realistically buff multiple units at once, seriously increasing the likelihood of casting GK powers. Combine this with the new Tide of Escalation and all your {{W40kKeyword|<BROTHERHOOD> PSYKERS}} could repeatedly cast their bonus {{W40kKeyword|<BROTHERHOOD>}} psychic power. Of course, this makes him a central figure in your army and a magnet for enemy snipers, psychics, and other such character removal entrapments.

*'''[[Brotherhood Champion]]:''' One of three Grey Knight Characters to not be permitted Terminator Armour (but that's ok for him, since he gets to wear artifice armour with no downside). 70pts with a fixed loadout of nemesis force sword and storm bolter, alongside WS2+, BS2+, W4, A5, Sv2+/4++. Martial Superiority lets him fight first if he is within engagement range of an enemy {{W40kKeyword|CHARACTER}}. Honour Or Death allows him to preform a Heroic Intervention within 6" of an enemy unit or {{W40kKeyword|CHARACTER}}. He casts and denies one psychic power, and knows smite and one Dominus power.
** With the buffs to Castellan Crowe, it's almost certainly worth paying another 20pts to get him instead; +1W, +1A, a nemesis sword that deals d3 MW's on a wound roll of UM6, and the purifying flame psychic power with +1 to cast it. Similar to the vanilla Grand Master vs. named Grand Master debate, the Champion has the advantage of being free to choose his own Relics, Warlord Traits, and <BROTHERHOOD>.

*'''[[Librarian]]:''' Terminator-flavour only. Like any standard Terminator Librarian, he has WS/BS 3+, W5, though now has base A4. He casts two psychic powers, denies one and knows smite and two powers in any combination from the Dominus AND Sanctic discipline. All this for starting at 105pts base, but a storm bolter costs 5pts and hammers or combi-weapons costs 10pts. They are your cheapest source of psychic casting and denying, and Ld9 makes them pretty good at it. 
** Casting each Dominus power only once per turn across your entire army means knowing more powers of the 12 we have access to is much less helpful than it sounds. However multiple models with the same power spread out over the field means you can best decide ''where'' that power gets used. 
** Psychic Hood with Brotherhood of Psykers gives him +2 to Deny The Witch. This gives the Librarian a 79.67% chance of denying enemy powers at 12". Basically, nobody short of Magnus will be able to cast anything reliably when near your Librarian's, and that's before using the Aegis stratagem, overcosted though it might be. 

*'''[[Techmarine]]:''' The Grey Knights' Techmarine, a magical repairman. 80pts gets you a Dreadnought and Dreadknight babysitter. He's also one of two Grey Knight models without a nemesis weapon, being stuck with a D2 power axe, two servo-arms, a boltgun, plasma cutter, and flamer. Like other Techmarines, he heals one {{W40kKeyword|GREY KNIGHT VEHICLE}} for d3 lost wounds at the end of your Movement Phase. And new to 9th edition, one {{W40kKeyword|GREY KNIGHT VEHICLE}} within 3" in the Command Phase gains +1 to hit rolls this turn. 
** '''Legends:''' You're able to swap the boltgun for a storm bolter, combi-weapon, plasma pistol, or grav pistol. His power axe can be swapped for a chainsword (why?), lightning claw (+6pts, SU, AP-2, D1, +1A and re-roll failed wound rolls), power lance, power maul, power sword, power fist (+9pts, Sx2, AP-3, D2, -1 to hit rolls), or thunder hammer (+'''40pts''', Sx2, AP-2, D3, -1 to hit rolls). Finally, both servo-arms, plasma cutter, and flamer can be swapped for a conversion beamer (0"-24", is S6, AP0, D1, and 25"-48" is S8, AP-1, D2. 

*'''[[Chaplain]]:''' Clad in Terminator Armor, magic, and faith. He is relatively expensive at 110pts, putting him on-par with a Brother-Captain. He's stuck with a crozius (S+2, AP-1, D2) and a storm bolter, and can cast, deny, and know one Dominus Power. Like other Chaplains, he shares his Ld9 with Grey Knight units within 6" and knows Litany of <s>Hate</s> Expulsion + one other Litany from the Litanies of Purity. At the start of the Battle Round, this model can recite one litany it knows that has not already been recited by a friendly model that battle round. Roll one d6; on a 3+ the recited litany takes effect until the end of that battle round. Unfortunately, reciting happens at the start of the round, i.e. ''before'' he arrives from Deep Strike. This means he has to live through a whole turn before he can live to his full potential. 
** Although Chaplains are a powerful force multiplier in melee, the restriction unless you use Gate of Infinity makes them better at fire support. His most efficient use is buffing a Purgation Squad giving them +6" shooting range/-1AP on UM6s to wound/Ignore shooting penalties + casting a spell.

====Special Characters====
Subfaction-specific special characters are listed in the sections for their subfactions, so [[Arvann Stern|Stern]] and [[Aldrik Voldus|Voldus]] are listed in the [[Warhammer_40,000/Tactics/Grey_Knights_(9E)#Wardmakers|Wardmakers]] section.

*'''[[Castellan Crowe]]:''' Among your cheapest options for an HQ at 90 points and now sporting a fancy new model thanks to Hexfire. The Black Blade of Antwyr is finally more than a close combat weapon, and now acts as a nemesis force sword that inflicts an '''additional''' d3 MWs on unmodified 6s to wound. Gains +1 to cast purifying flame, fights first whenever he faces enemy  {{W40kKeyword|CHARACTER}}s, and has an improved Heroic Intervention range. He can now only naturally cast one power a turn; give him Vortex of Doom and use the strat for him to cast an additional psychic power, and Crowe will have the choice of dishing out two of three flavours of MWs (d3/d6, 3/d3+3, 2d3 +1MW per nearby enemy unit) in the psychic phase. He is now a truly bona fide MW output machine!
**He is super points efficient even when compared to regular space marines HQs; heck, even most armies would struggle to find an HQ with 2+/4++ for 90 points. He absolutely tears through screens and chaff with his massive Mortal Wound output - both in the psychic (d3MW smite / 3MW Purifying Flame) and fight (d3MW on unmodified 6s to wound) phases. Might struggle a bit with {{W40kKeyword|VEHICLE}}s but hey, if you're trying to kill that 30 man blob of Boyz with one model, Crowe can probably do it.
*'''[[Kaldor Draigo|Lord Kaldor Draigo]]:''' The warp crusader himself returns, this time as a force multiplier AND a close combat monster. The last Marine to have the Chapter Master ability (one friendly {{W40kKeyword|GREY KNIGHTS CORE}} or {{W40kKeyword|CHARACTER}} unit within 6" can re-roll ALL hit rolls) and a special storm shield (3++ invulnerable save). He comes with W7 over a Grand Master W6, a master-crafted storm bolter, and the Titansword (S+4 AP-4 D3). He also casts, denies, and knows two Psychic Powers, another improvement over the Grand Master. All-in-all, pretty great for an extra 35pts over a hammer Grand Master. The only downsides are the lack of Brotherhood but it's not as useless as before, and you don't have to make him your Warlord. 
**Draigo '''is not a Grand Master''', so there is nothing stopping you from taking him ontop of a GMNDK, and his extra cast, 3++ invuln, and Thunderhammer-equivalent makes him a good replacement to do what your Grandmaster should've been doing if he wasn't strapped to a babycarrier. Let the GMNDK beat up vehicles with his goonsquad of 3 more Dreadknights and when they inevitability get blown to bits, LKD can come out of the warp with his plot armor 3++. 
**Currently one of the best beatstick characters in the game. Wipes the floor with most other HQs, and the 2023 FAQ clarified that his WLT now works against the special-snowflake "can never be modified" DAEMONsaves. Only Abaddon, Asurmen, and Calgar are the only real threats 1v1 outside of Primarchs, Ghazzy, Avatar, Swarmlord, etc. Just watch out for that Nightbringer C'tan shard...