Optional Rule: Multiclassing

If your group uses the optional rule on multiclassing in the Player's Handbook, here's what you need to know if you choose diabolist as one of your classes.

Ability Score Minimum. As a multiclass character, you must have at least a Constitution score of 13 and a Strength score or Dexterity score of 13 to take a level in this class, or to take a level in another class if you are already a diabolist.

Proficiencies Gained. If diabolist isn't your initial class, here are the proficiencies you gain when you take your first level as a diabolist: light armor, medium armor, shields, simple weapons, and martial weapons.

Spell Slots. You can add the spell slots you gain from the Profane Magic feature to your spell slots from any other source.

Hit Points

• Hit Dice: 1d10 per diabolist level
• Hit Points at 1st Level: 10 + your Constitution modifier
• Hit Points at Higher Levels: 1d10 (or 6) + your Constitution modifier per diabolist level after 1st

Proficiencies

• Armor: All armor, shields
• Weapons: Simple weapons, martial weapons
• Tools: None

• Saving Throws: Constitution, Charisma
• Skills: Choose two from Arcana, Athletics, Acrobatics, Religion, Deception, and Intimidation

Equipment

You start with the following equipment, in addition to the equipment granted by your background:

• (a) scale mail or (b) leather armor
• (a) a martial melee weapon or (b) two simple melee weapons
• (a) a light crossbow and 20 bolts or (b) two handaxes
• Two daggers and a dungeoneer's pack

Cantrips Known

At 1st level, you know two cantrips of your choice from the diabolist spell list. You learn additional diabolist cantrips of your choice at higher levels, as shown in the Cantrips Known column of the Diabolist table.

Spell Slots

The Diabolist table shows how many spell slots you have. The table also shows what the level of those slots is; all of your spell slots are the same level. To cast one of your diabolist spells of 1st level or higher, you must expend a spell slot. You regain all expended spell slots when you finish a short or long rest.

For example, at 5th level, you have two 2nd-level spell slots. To cast the 1st-level spell witch bolt, you must spend one of those slots, and you cast it as a 2nd-level spell.

Spells Known of 1st Level and Higher

At 1st level, you know two 1st-level spells of your choice from the diabolist spell list.

The Spells Known column of the Diabolist table shows when you learn more diabolist spells of your choice of 1st level or higher. A spell you choose must be of a level no higher than what's shown in the table's Slot Level column for your level. When you reach 5th level, for example, you learn a new diabolist spell, which can be 1st or 2nd level.

Additionally, when you gain a level in this class, you can choose one of the diabolist spells you know and replace it with another spell from the diabolist spell list, which also must be of a level for which you have spell slots.

Spellcasting Ability

Constitution is your spellcasting ability for your diabolist spells, as your as your magic is drawn from your very vitality. You use your Constitution whenever a diabolist spell refers to your spellcasting ability. In addition, you use your Constitution modifier when setting the saving throw DC for a diabolist spell you cast and when making an attack roll with one.

Blind Fighting

You have blindsight with a range of 10 feet. Within that range, you can effectively see anything that isn't behind total cover, even if you're blinded or in darkness. Moreover, you can see an invisible creature within that range, unless the creature successfully hides from you.

Defense

While you are wearing armor, you gain a +1 bonus to AC.

Dueling

When you are wielding a melee weapon in one hand and no other weapons, you gain a +2 bonus to damage rolls with that weapon.

Great Weapon Fighting

When you roll a 1 or 2 on a damage die for an attack you make with a melee weapon that you are wielding with two hands, you can reroll the die and must use the new roll, even if the new roll is a 1 or a 2. The weapon must have the two-handed or versatile property for you to gain this benefit.

Two-Weapon Fighting

When you engage in two-weapon fighting, you can add your ability modifier to the damage of the second attack.

Covenant of Blood Features

Crimson Vitality

When you gain this covenant at 1st level, your talent for blood magic bolsters your fortitude. You have resistance to necrotic damage.

Additionally, your hit point maximum increases by 1 and increases by 1 again whenever you gain a level in this class.

Blood Incarnate

At 2nd level, while under the effects of your Corruption feature, you gain the following benefits.

• The additional damage you deal is necrotic damage. When you deal this damage to a creature, you regain hit points equal to the number of dice spent from your pool, which is not reduced by your Corruption feature as normal.
• At the start of each of your turns, you gain temporary hit points equal to your Corruption stage + your Constitution modifier. You gain these temporary hit points after you take on any additional stages of Corruption (if any), and they last until the start of your next turn.

Sanguine Extraction

At 7th level, you can permanently diminish another's own vitality. When you deal necrotic damage to a creature, you can force it to make a Constitution saving throw against your diabolist spell save DC. On a failed save, the target's hit point maximum is reduced by the amount of necrotic damage they took until they finish a long rest.

You have a number of uses of this feature equal to half your proficiency bonus (rounded down), and you regain all expended uses when you finish a short or long rest.

Blood for Blood

At 11th level, you can manipulate your loss of life force into gain for another. When you take damage to your hit points (as opposed to temporary hit points), you can use your reaction to choose a creature within 30 feet of you (not including yourself). The chosen target regains hit points equal to the amount you lost. Once you use this feature, you can't do so again until you finish a short or long rest.

Vampiric Embrace

At 15th level, the life you drain from your enemies becomes your own. When you use your Sanguine Extraction feature, you also regain hit points equal to the necrotic damage dealt.

Additionally, when you use your Blood for Blood feature, you can choose yourself, regaining hit points equal to the number of hit points you lost as the feature describes.

Hit points regained from this feature are not reduced as normal if you are under the effects of your Corruption feature.

Covenant of Flame Features

Borne of Fire

When you gain this covenant at 1st level, you are used to the heat and devastation that fire can bring. You have resistance to fire damage.

Additionally, when you cast a spell that deals fire damage, you gain a bonus to one of the spell's damage rolls equal to your proficiency bonus.

Flame Incarnate

At 2nd level, while under the effects of your Corruption feature, you gain the following benefits.

• The additional damage you deal is fire damage. When you deal this damage to a creature, they take extra fire damage equal to the number of dice spent from your pool.
• At the start of each of your turns, hostile creatures within 5 feet of you take fire damage equal to your Corruption stage + your Constitution modifier. This damage is dealt after you take on any additional stages of Corruption (if any).

Raze

At 7th level, you can wreak fiery destruction at a whim. As an action, you can use this feature to cast the Burning Hands spell without expending a spell slot. The spell level is equal to the highest level you can cast a diabolist spell at from your Profane Magic feature (or your Dark Diablerie feature, once you gain it). This casting of the spell is affected by your Borne of Fire feature as normal.

You have a number of uses of this feature equal to half your proficiency bonus (rounded down), and you regain all expended uses when you finish a short or long rest.

Immolating Embers

At 11th level, your fire magic persists. When you deal fire damage to a creature, you can choose to immolate them (no action required). If you do, at the start of that creature's next turn, they take fire damage equal to half your diabolist level (rounded down).

You can do this a number of times equal to your proficiency bonus, and must finish a short or long rest before doing so again.

Phoenix's Vengeance

At 15th level, unholy fire ensures that you never die. When you are reduced to 0 hit points, you can use your reaction to instead drop to 0 hit points. When you do this, you unleash your fiery wrath on the creature who reduced you to 0 hit points. That creature immediately takes damage equal to twice your diabolist level; if this damage reduces them to 0 hit points, you then regain the same amount of hit points.

Once you use this reaction, you can't use it again until you finish a short or long rest.

Covenant of Frost Features

Harbinger of Winter

When you gain this covenant at 1st level, an icy chill surrounds you always. You have resistance to cold damage.

Additionally, your speed cannot be reduced unless it is reduced to 0, and you ignore nonmagical difficult terrain.

Frost Incarnate

At 2nd level, while under the effects of your Corruption feature, you gain the following benefits.

• The additional damage you deal is cold damage. When you deal this damage to a creature, they must succeed on a Constitution saving throw against your diabolist spell save DC or have their speed reduced by 5 x the number of dice spent from your pool until the start of your next turn.
• At the start of each of your turns, you can spend dice from your pool (no action required) to increase your AC by 1 for each die spent. The maximum amount of dice you can spend to do this is equal to half your proficiency bonus (rounded up). You spend these dice after you take on any additional stages of Corruption (if any).

Glacial Guard

At 7th level, you can summon shields of ice to protect you. When you are targeted by an attack, you can use your reaction to gain temporary hit points equal to twice your diabolist level; these temporary hit points are gained before the attack hits and last until the start of your next turn.

While you have these temporary hit points, any creature that deals damage to you must make a Dexterity saving throw against your diabolist spell save DC, as shards of ice break off your guard and fly towards them. A creature takes cold damage equal to your diabolist level on a failed save, or half as much on a successful one.

You have a number of uses of this feature equal to half your proficiency bonus (rounded down), and you regain all expended uses when you finish a short or long rest.

Unending Blizzard

At 11th level, you can summon icy winds to whip around you, chilling your enemies to the bone. As a bonus action, you can activate or dismiss these winds, which extend 5 feet from you in every direction. Any hostile creature that starts its turn within 5 feet of you has their speed halved until the start of their next turn. This speed reduction is cumulative with the speed reduction granted by your Frost Incarnate feature.

Frozen Over

At 15th level, you can completely lock your foes in ice. As an action, you can choose a creature within 30 feet of you; that creature must make a Constitution saving throw against your diabolist spell save DC. On a failed save, they are paralyzed as supernatural ice locks them in place.

This effect lasts for 1 minute or until they are hit by an attack or fail a saving throw, which shatters the ice and frees them. Alternatively, you can use your reaction to expend a diabolist spell slot to prevent the ice from shattering, which keeps the target paralyzed. You cannot use this reaction if the attack was a critical hit or if the creature automatically failed the saving throw.

Once you use this feature, you can't do so again until you finish a short or long rest.

Covenant of Instinct Features

The Beast Within

When you gain this covenant at 1st level, you let out your inner animal. You gain resistance to acid damage.

Additionally, your speed is increased by 10 feet, and your unarmed strikes deal 1d6 slashing damage instead of the normal damage and type for unarmed strikes.

Instinct Incarnate

At 2nd level, while under the effects of your Corruption feature, you gain the following benefits.

• The additional damage you deal is acid damage. When you deal this damage to a creature, another creature of your choice within 5 feet of both you and the target takes acid damage equal to the number of dice spent from your pool.
• At the start of each of your turns, you can immediately move a number of feet up to 5 + 5 x your Corruption stage without provoking opportunity attacks. You take this movement after you take on any additional stages of Corruption (if any).

Chase the Scent

At 7th level, you have a supernatural sense for your prey. When you deal damage to a creature, you can track that creature's approximate location for the next 10 minutes. This sense allows you to ignore the disadvantage granted on attack rolls by being blinded, the target being invisible, or the target being heavily obscured. It also grants you advantage on any Perception, Survival, and Investigation checks to follow or locate the creature.

The maximum number of creatures you can track at once is equal to your Constitution modifier (minimum of 1). When you attack a new creature, the oldest tracked creature is lost.

Thrill of the Hunt

At 11th level, as you hunt your prey, their wounds reinvigorate you. The first time you hit a creature with an attack on your turn, you gain temporary hit points equal to your Constitution modifier (minimum of 1).

Apex Predator

At 15th level, your strikes are as swift as a predator's. You can make 3 attacks, instead of 2, whenever you take the Attack action on your turn.

Additionally, your unarmed strikes now deal 1d8 slashing damage.

Covenant of Plague Features

Disease-Ridden

When you gain this covenant at 1st level, you know how best to utilize diseases. You gain resistance to poison damage.

Additionally, magical poison damage you deal ignores resistance to poison damage.

Plague Incarnate

At 2nd level, while under the effects of your Corruption feature, you gain the following benefits.

• The additional damage you deal is poison damage. When you deal this damage to a creature, they must succeed on a Constitution saving throw against your diabolist spell save DC or take a penalty to all ability checks equal to half the dice spent from your pool (rounded up) until the start of your next turn.
• At the start of each of your turns, you can spend dice from your pool (no action required) to force a number of creatures within 5 feet of you to equal to the number of dice spent to make a Constitution saving throw or be poisoned until the start of your next turn. The maximum amount of dice you can spend to do this is equal to half your proficiency bonus (rounded up). You spend these dice after you take on any additional stages of Corruption (if any).

Miasma

At 7th level, a sickening aura surrounds you. As a bonus action, you can activate or dismiss this aura, which extends 5 feet from you in every direction. While the aura is active, hostile creatures within it take poison damage equal to your Constitution modifier.

Festering Strike

At 11th level, you can take advantage of opponents riddled with disease. When you hit a creature with a weapon attack and that creature has the poisoned condition, you can end the condition on that creature early to deal additional poison damage equal to your diabolist level.

You can do this a number of times equal to your proficiency bonus, and must finish a short or long rest before doing so again.

Virulent Outbreak

At 15th level, your diseases spread incredibly quickly. Once per round when you deal poison damage to a creature, every hostile creature within 5 feet of that creature must make a Constitution saving throw against your diabolist spell save DC. On a failure, they take poison damage equal to half the damage the first creature took.

Covenant of Shadow Features

Lurking in the Dark

When you gain this covenant at 1st level, you can use shadows to your advantage. You gain resistance to psychic damage.

Additionally, you can see normally in darkness, both magical and nonmagical, to a distance of 60 feet.

Shadow Incarnate

At 2nd level, while under the effects of your Corruption feature, you gain the following benefits.

• The additional damage you deal is psychic damage. When you deal this damage to a creature, they must succeed on a Wisdom saving throw against your diabolist spell save DC or take a penalty to attack rolls made against you equal to half the dice spent from your pool (rounded up) until the start of your next turn.

• At the start of each of your turns, you can spend dice from your pool (no action required) to force a number of creatures within 5 feet of you to equal to the number of dice spent to make a Wisdom saving throw or be frightened of you until the start of your next turn. The maximum amount of dice you can spend to do this is equal to half your proficiency bonus (rounded up). You spend these dice after you take on any additional stages of Corruption (if any).

Umbral Mask

At 7th level, you can hide yourself in magical shadows. As an action, you can turn invisible for the next minute. This invisibility ends early if you make an attack or cast a spell.

You have a number of uses of this feature equal to half your proficiency bonus (rounded down), and you regain all expended uses when you finish a short or long rest.

Waking Nightmare

At 11th level, you can manipulate the fear of your enemies. A creature that is frightened by you has disadvantage on saving throws while you are within line of sight, in addition to attack rolls and ability checks.

Additionally, you are still considered within line of sight of any creature frightened by you if you are within 30 feet of it, even if they can't see you (including you being obscured or invisible).

Crippling Fear

At 15th level, you can lock your enemies in terror. As a bonus action, you can choose one creature within 30 feet of you that is frightened of you; that creature must make a Charisma saving throw against your diabolist spell save DC. On a failed save, that creature is stunned until it is no longer frightened of you.

Once you use this feature, you can't do so again until you finish a short or long rest.

Multiclassing

You must have a Charisma score of 13 or higher, instead of Constitution, to take a level in this class, or to take a level in another class if you are already a vessel.

Vault Magic

A vessel's Vault Magic feature functions identically to the diabolist's Profane Magic, with the following changes.

• You use Charisma as your spellcasting ability, instead of Constitution. You use Charisma when determining your spell attack modifier and your spell save DC.

Renamed Features

The following features are renamed, but are not altered in any other way.

• Unholy Covenant is renamed to Bound Essence.
  • Covenant of Blood is renamed to Essence of Blood.
  • Covenant of Flame is renamed to Essence of Flame.
  • Covenant of Frost is renamed to Essence of Frost.
  • Covenant of Instinct is renamed to Essence of Instinct.
  • Covenant of Plague is renamed to Essence of Plague.
  • Covenant of Shadow is renamed to Essence of Shadow.
• Corruption is renamed to Unseal.
  • Stages of Corruption are renamed to Seals.
  • Maximum Corruption is renamed to Maximum Seal.
• Vile Fortitude is renamed to Vessel's Fortitude.
• Desecrated Strikes is renamed to Vested Might.
• Undaunted is renamed to Second Will.
• Dark Diablerie renamed to Unbind Essence.
  • Diableries renamed to unbindings.
• Unholy Presence renamed to False Idol.
• Diabolic Sovereign renamed to Apotheosis.

Ability Score Replacement

Any feature from this class that refers to your Constitution modifier instead refers to your Charisma modifier.