Editing Grim Hollow (section)

===Transformations===
Grim Hollow's most iconic element, the ''Transformations'' mechanic is a kind of 4 level Prestige Class that allows a player to slowly become some kind of specific monster, gaining unique powers and flaws at each of the four levels. Transformations in the Campaign Guide consist of the '''Aberrant Horror''', the '''Fiend''', the '''Lich''', the '''Lycanthrope''', the '''Seraph''' and the '''Vampire'''. Yes, becoming an angel is treated as being as horrifying and dehumanizing as becoming a fiend.

The Player's Guide added the '''Primordial''', the '''Fey''' and the '''Spectre'''.

Here's how it works: each Transformation requires certain mechanical and story requirements to acquire, with at the very least each Transformation needing a certain value of [[Ability Scores]]. To progress in level, the player needs to undertake an in-game story-based progression milestone - it typically recommends keeping each Transformation Level to a certain range of class levels, so it doesn't become too weak or too powerful compared to non-Transforming characters.

When they get their first level in a Transformation, they gain two special Transformation Boons and a mandatory Transformation Flaw. On levels 2-4, they gain their choice of 1 of several Transformation Boons, which could be taken from an earlier Transformation level, and a mandatory Transformation Flaw.

Examples of Universal Transformation Milestones are:
* Undertaking an exceptional act of evil or good.
* Completing an ancient ritual.
* Performing a powerful artifact.
* Being cursed by a dark agent.
* Being exalted by a patron or god.

Can you undo a Transformation? Yes, if the DM agrees; it basically works like curing a curse, but requires a Regenerate spell rather than Remove Curse. However, a character who has reached the 4th level, or being Transformed for over a year, can only be cured with a Wish. It's up to the DM to decide if killing and resurrecting a character frees them from their transformation or not.

If a Transformation ability allows a save, the DC is always 8 + the character's Proficiency bonus + an ability score modifier, the precise modifier being determined by the precise Transformation.

====Aberrant Horror====
Aberrant Horrors are humanoids who have begun transforming into an [[aberration]], granting them grotesquely fluid anatomies and the ability to reshape their bodies in the most nightmarish, sanity-breaking ways. 

Becoming an Aberrant Horror requires '''13 Constitution''' and some kind of encounter with an aberration, magical anomaly, or other phenomena to trigger the complete reshaping of your body. The following are possible level milestones for the Aberrant Horror:
* Defeating a powerful Aberration and absorbing its power.
* Undergoing a dangerous and costly experiment.
* Surviving a magical mishap.
* Acquiring the strength to give birth to a more powerful version of yourself, which then consumes your old self.
* Fulfilling an eldritch prophecy written in the stars.

An Aberrant Horror's save DC keys off of Constitution.

At 1st level, you gain the Boons '''Aberrant Adaptions''' (use bonus actions to activate biological heavy armor and weapons) and '''Aberrant Form''' (+2 Con, +1 Str, Type changes to Aberration), and you receive the Flaw '''Unstable Mutations'''. Each time you complete a Long Rest, you have to roll on a d100 to see how your fluctuating anatomy screws you over for a time.

At 2nd level, you can take the Boons '''Efficient Killer''' (powers up your bio-weapons from Aberrant Adaptions), '''Other-Worldly Tendrils''' (spend a bonus action to activate several different tentacle attack options) or '''Situational Evolution''' (spend a bonus action to gain a climb speed, swim speed + amphibious, or regeneration), and you receive the Flaw '''Hideous Appearance'''. Acquiring this flaw means that you become a shapeshifter, with a hideously warped base form and the ability to resume your original form. You revert to your true form if you Concentrate on a spell, are knocked unconscious, enter hallowed ground, or consciously choose to do so. At the DM's discretion, events of extreme emotional or physical stress may require a Constitution save to avoid reverting. Non-evil creatures that see your true form will instantly become hostile to you, unless the DM decides otherwise.

At 3rd level, you can take the Boons '''Wings''' (bonus action gives you wings for 10 minutes), '''Additional Tendrils''' (requires Other-Worldly Tendrils, you can use 2 tentacles simultaneously, upgrades to 3 at 4th stage) or '''Enhanced Hypertrophy''' (Unarmed Strikes do d8 damage, offensive adaptations increase their damage by +1 die type), and you receive the Flaw '''Unstable Existence'''. Your Hideous Appearance is revealed whenever you roll a natural 1-3 on a save against a spell or magical ability.

At 4th level, you can take the Boons '''Savage Predator''' (on a nat-20, do +6d6 damage and force enemies to save vs. fear), '''Master of the Deep''' (requires Additional Tendrils, 1/short rest you can make a debuffing attack against all enemies within 15 feet) or '''Extremophiliac Conditioning''' (spend a bonus action to gain Resistance to either all Physical damage, Fire+Lightning+Acid damage, or Cold+Thunder+Poison damage), and you receive the Flaw '''Entropic Abomination'''. When you fail a save vs. spell or magical ability, roll on the Unstable Mutations table and switch to the new result if it's lower than your current result.

====Fiend====
Quite self-explanatory, this Transformation causes you to become a Fiend - closer to a [[devil]] than a [[demon]], what with the focus on Faustian bargains.

Becoming a Fiend requires Charisma 13 and somehow damning one's soul for power, such as by pacting with a Fiend or by undergoing an infernal ritual. The following are possible level milestones for the Fiend:
* Defeating a greater rival Fiend and taking their place in the hierarchy.
* Ensnaring a particularly powerful or influential soul with a contract.
* Establishing a cult of worshipers who offer their strength to you.
* Establishing a portal between the material plane and the Netherworld.
* Killing or corrupting a Seraph.

A Fiend's Transformation Save DC keys off of Charisma.

At 1st level, you gain the Boons '''Gifts of Damnation''' (you can sign soul contracts with mortals to gain special powers) and '''Fiendish Form''' (+2 Charisma, +1 Intelligence, Type changes to Fiend), and you receive the Flaw '''Planar Binding'''. This flaw causes you to suffer Disadvantage on death saving throws, and if you die, you cannot be raised.

At 2nd level, you can take the Boons '''Brand of the Chainer's Gaze''' (inflict a curse that penalizes saves), '''Brand of the Tyrant's Hellfire''' (inflict a curse that adds bonus Fire damage to your attacks) or '''Brand of the Deceiver's Guile''' (inflict a curse that penalizes attack rolls), and you receive the Flaw '''Hideous Appearance'''. Acquiring this flaw means that you become a shapeshifter, with a hideously warped base form and the ability to resume your original form. You revert to your true form if you Concentrate on a spell, are knocked unconscious, enter hallowed ground, or consciously choose to do so. At the DM's discretion, events of extreme emotional or physical stress may require a Constitution save to avoid reverting. Non-evil creatures that see your true form will instantly become hostile to you, unless the DM decides otherwise. All of the Boons at this level can be used Charisma modifier times per day, and the curses they create last for 1 minute, or until the target is knocked unconscious, enters hallowed ground, or is targeted by Remove Curse.

At 3rd level, you can take the Boons '''Alluring Deceit''' (free Proficiency/Expertise in Deception and Persuasion, immunity to magic that detects lies and compels truthful speech), '''Infernal Resistance''' (burn a reaction to halve damage from non-silvered weapon attacks) or '''Nether Blade''' (spend a bonus action to summon an infernal burning blade to fight with), and you receive the Flaw '''True Name'''. This flaw causes you to manifest a talisman inscribed with your true name, which other creatures can use to control you.

At 4th level, you can take the Boons '''Commanding Obedience''' (your spells can force your opponents to fall prone), '''Brimstone Pyrolysis''' (your fire attacks can turn slain enemies into miniature bombs) or '''Infernal Summoning''' (you can summon a squad of up to 4 imps 1/day), and you receive the Flaw '''Pull of the Netherworld'''. This causes you to take 1d6 Force damage per two character levels whenever you roll a natural 1 on a save against a magical spell or ability.

====Lich====
Self explanatory, the Lich transformation allows powerful spellcasters to assume a form that will allow them to continue to study magic for all eternity.

As such, this is the hardest Transformation to qualify for: Intelligence 16, ability to cast 7th level spells, and you must track down and successfully perform the Ritual of Dread. The following are possible level milestones for the Lich:
* Discover ancient and dark arcane knowledge.
* Consume the soul of an exceptionally powerful spellcaster.
* Build a monument to your power to serve as a giant arcane focus.
* Create an army of undead.
* Kill a god.

At 1st level, you gain the Boons '''Harvester of Souls''' (creatures you kill become phylactery charges you can burn to recover spell slots) and '''Undead Form''' (+4 Int, +2 Wis, type changes to Undead, lowered benefit from external healing effects, immunity to aging, air, food, drink and sleep), and you receive the Flaw '''Phylactery'''. This causes you to create a talisman to bind your soul into; if it gets destroyed, you die, instantly. If you die, you will revive 1 week later so long as there is a soul charge in your phylacterty - otherwise, at the end of the week, you become a Demilich NPC.

At 2nd level, you can take the Boons '''Puppet Master''' (undead mooks you create are permanent and cannot be stolen from you), '''Lichdom of the Arcane''' (killing a creature with a spell that does fire, necrotic, or poison damage triggers a bonus effect) or '''Rift to the Dreadscapes''' (As an action, create a zone of super-killy necrotic energy), and you receive the Flaw '''Hideous Appearance'''. Acquiring this flaw means that you become a shapeshifter, with a hideously warped base form and the ability to resume your original form. You revert to your true form if you Concentrate on a spell, are knocked unconscious, enter hallowed ground, or consciously choose to do so. At the DM's discretion, events of extreme emotional or physical stress may require a Constitution save to avoid reverting. Non-evil creatures that see your true form will instantly become hostile to you, unless the DM decides otherwise.

At 3rd level, you can take the Boons '''Relentless Undead''' (undead you control can make a full move + attack before dying), '''Arcane Supremacy''' (you can suffer Exhaustion to Concentrate on two spells simultaneously) or '''Staff of the Dreadscapes''' (as an action, summon an enchanted quarterstaff), and you receive the Flaw '''Necromantic Dystrophy'''. If you go more than 24 hours without converting 4 CR worth of souls into spell slots, you suffer severe penalties.

At 4th level, you can take the Boons '''Lord of Undeath''' (humanoids you kill auto-rise as zombies under your command), '''Arcane Omniscience''' (you know all Wizard spells and can cast Int modifier bonus Wizard spells per day) or '''Deathly Being''' (gain lich immunities and resistances), and you receive the Flaw '''Weight of Ages'''. This is the more severe form of Necromantic Dystrophy, forcing you to burn up 8 CR worth of souls per day.

====Lycanthrope====
Obviously, becoming a Lycanthrope turns you into a [[therianthrope|werebeast]]. Whilst the easiest way is to be bitten by a werebeast and survive, there's also a [[druid]]ic ritual called the Lunar Sacrament that can curse a victim with this transformation, which is obviously viewed in a holy perspective by druids.

Mechanically, taking this Transformation requires 13 Strength, and its Save DC keys off of Strength. The following are possible level milestones for the Lycanthrope:
* Establishing a pack of lycanthropes.
* Killing an alpha lycanthrope.
* Gaining control of your animalistic urges.
* Unleashing the beast within and losing your humanity.

At 1st level, you gain the Boons '''Hybrid Transformation''' (you can change into a half-humanoid, half-beast shape) and '''Shapechanger's Form''' (+2 Strength, +1 Constitution, gain the Shapechanger type), and you receive the Flaw '''Lust for the Hunt'''. This flaw forces you to make a DC 10 Wisdom save at the start of each turn, or move towards the nearest NPC, prioritizing the helpless, so you can try to kill it; when exposed to a full moon's light, you automatically fail this save. The first time you see a full moon, you need to pass a DC 20 Wisdom save or be forcibly transformed into hybrid shape until dawn.

At 2nd level, you can take the Boons '''Iron Pelt''' (gain resistance to physical damage from non-silver and non-magical sources in hybrid form), '''Hunter's Howl''' (you can use a howl to mark a creature as prey, gaining bonuses to tracking and killing it) or '''Kindred Form''' (you can now assume animal form as well as hybrid form), and you receive the Flaw '''Silver Sensitivity'''. This makes you Vulnerable to damage done by silvered weapons when you're in hybrid or kindred form, and you cannot apply any Resistance to an attack made by a silvered weapon.

At 3rd level, you can take the Boons '''Titanic Vigor''' (+2 max HP per level, gain 5 temp HP each turn in hybrid form), '''Predatory Leap''' (double jumping distance, can make pounce attacks in hybrid form) or '''Bestial Savagery''' (hybrid form gains: attacks are damage-buffed and count as magic, +1 AC, immunity to charm & fear), and you receive the Flaw '''Fraying Memories'''. This flaw gives you Disadvantage on Intelligence ability and skill checks based on recalling information or knowledge.

At 4th level, you can take the Boons '''Savage Instincts''' (hybrid form attacks are suped up vs. hurt targets), '''Kindred Affinity''' (requires Kindred Form, lets you speak and cast spells in kindred form) or '''Unstoppable Rage''' (you can keep fighting at 0 HP), and you receive the Flaw '''Predatory Nature'''. This flaw makes it harder to resist your urge to kill the weak and helpless, as well as making it harder to return to your original form.

====Seraph====
Seraphs are the Angels of Etharis, and consist of mortals uplifted for their devotion to a virtue or ideal; as such, they are commonly selected from noble martyrs, tireless crusaders, and other exemplary individuals. 

Becoming a Seraph requires Wisdom 13 and either exaltation by an Arch-Seraph or exposure to powerful divine energies. The following are possible level milestones for the Seraph:
* Defeating a powerful force of darkness.
* Create a hallowed landmark for pilgrims.
* Establish a parish of worshipers who uphold your virtue.
* Establish a portal between the Material Plane and the Empyrium. 
* Redeem a soul that was considered beyond redemption.

At 1st level, you gain the Boons '''Celestial Form''' (+2 Wisdom, +1 Constitution, type changes to Celestial) and '''Angelic Wings''' (you've a Fly speed equal to your Normal speed, but can't wear clothes or armor that aren't tailored to fit), and you receive the Flaw '''Planar Binding'''. This is identical to the Fiend flaw of the same name, but is based on your connection to a divine plane rather than an unholy one.

At 2nd level, you can take the Boons '''Divine Retribution''' (grant a Radiance-charged bonus attack to yourself or an ally), '''Divine Clemency''' (when you or an ally is hurt, you can cast a healing spell as a reaction) or '''Divine Expedition''' (burn a reaction to move yourself or a nearby ally), and you receive the Flaw '''Divine Appearance'''. This is the same as Hideous Appearance, but obviously revolves around you looking like an obvious angel, which has its problems in a world crawling with monsters and the wicked.

At 3rd level, you can take the Boons '''Radiant Strike''' (your melee attacks do bonus Radiant damage, especially against fiends, fey and undead), '''Cleanse Affliction''' (your healing spells also remove negative conditions) or '''Bow of Celestial Judgement''' (you can summon a magic bow that shoots holy lasers), and you receive the Flaw '''Beacon to Darkness'''. This flaw means that if you or allies within close proximity commit evil acts, you pick up "corruption points" that temporarily impede your ability to fight the naturally evil.

At 4th level, you can take the Boons '''Aura of Holy Purge''' (grant a free critical hit 1/day), '''Aura of Merciful Blessing''' (you or an ally can survive a killing attack with 1 HP 1/day) or '''Aura of Empyreal Valor''' (grant yourself or an ally increased speed and dexterity 1/day), all of which have a radius of 20 feet and are only active whilst you're conscious, and you receive the Flaw '''Pull of the Empyrean'''. This is just a name-tweaked version of the Fiend's "Pull of the Netherrealm".

====Vampire====
Simple, obvious, self-explanatory. You were bitten by another vampire, you drank a vampire's blood, you handled the wrong (or right!) cursed magical artifact, or you performed a dark rite to willingly infect yourself with the Sanguine Curse.

This Transformation requires Dexterity 13, and its save DC keys off of Dexterity. The following are possible level milestones for the Vampire:
* Establish a coven of vampire spawn.
* Drink the blood of a legendary monster.
* Learn the great secrets of vampirism from a Vampire Lord.
* Learn to embrace your Hideous Form and lose the ability to conceal it.
* Discover the lost crypts of an ancient vampire and consume its essence.

At 1st level, you gain the Boons '''Blood Fury''' (doing damage to living creatures lets you rack up points you can use to power special attacks) and '''Undead Form''' (+2 Dex, +1 Cha, type changes to Undead, lowered benefit from external healing effects, immunity to aging, air, food, drink and sleep), and you receive the Flaw '''The Sanguine Curse'''. This gives you Darkvision 60 feet if you don't already have it, but prevents you from entering a residence unless invited, causes you to suffer Disadvantage on attack rolls and ability checks when in sunlight, and requires you to feed on blood at least once per 7 days.

At 2nd level, you can take the Boons '''Dread Knight Combat Training''' (you can enter a special stance to boost offense, defense or accuracy), '''Sanguine Magic''' (you can convert non-typed spell damage into necrotic damage, gain Fury Points with spell attacks, and gain some spellcasting-related options for Blood Fury) or '''Shapechanger''' (you can turn into a bat and a cloud of mist), and you receive the Flaw '''Hideous Appearance'''. Acquiring this flaw means that you become a shapeshifter, with a hideously warped base form and the ability to resume your original form. You revert to your true form if you Concentrate on a spell, are knocked unconscious, enter hallowed ground, or consciously choose to do so. At the DM's discretion, events of extreme emotional or physical stress may require a Constitution save to avoid reverting. Non-evil creatures that see your true form will instantly become hostile to you, unless the DM decides otherwise.

At 3rd level, you can take the Boons '''Cruel Riposte''' (you gain a bonus melee attack against assailants), '''Creatures of the Night''' (you can summon swarms of bats, rats and wolves to aid you) or '''Captivating Glance''' (free proficiency in Deception + Persuasion, immunity to having your thoughts read), and you receive the Flaw '''Greater Sanguine Curse'''. This increases your Darkvision to 120 feet, causes you to take 1d10 acid damage per turn from running water, makes you suffer 1d10 radiant damage per turn when exposed to sunlight, and requires you to feed every 3 days.

At 4th level, you can take the Boons '''Grim Executioner''' (requires Dread Knight Combat Training; a critical hit will insta-kill a foe with 50 or fewer HP), '''Beguiler's Entrancement''' (requires Captivating Glance, lets you Charm a creature 1/day) or '''Regenerate''' (lets you regenerate damage unless exposed to sunlight, radiant damage or running water), and you receive the Flaw '''Stake to the Heart'''. With this flaw, a natural 20 to hit you with a wooden or silvered weapon, if you have 50 or fewer HP left, causes you to be paralyzed for 1 hour or until the weapon is removed, whichever is greater.

====Primordial====
This upcoming Transformation turns you into an [[elemental]].

====Fey====
As its name suggests, this Transformation turns you into a [[fey]].

====Spectre====
An unlocked stretch goal for the Player's Guide, this Transformation turns you into a [[ghost]].

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