Vyrathi Abyssal Behemoth

Abyssal Anchor

The Behemoth cannot be banished, polymorphed, or magically put to sleep. If reduced to 0 hit points outside the Abyss, its body collapses but reforms in the Abyss after 1d10 days unless destroyed by a god-tier effect or pact-breaking ritual.

Predatory Instincts (Mythic)

The Behemoth has advantage on attack rolls against creatures that are frightened, prone, restrained, or below half their hit point maximum.

Demonic Conduit

At the start of each of the Behemoth’s turns, it regains 20 hit points unless it took radiant damage since the end of its last turn.

Colossal Reach

The Behemoth’s melee attacks have a reach of 20 feet.

Multiattack

The Behemoth makes three attacks: two with its Abyssal Cleavers and one Bite.

Abyssal Cleaver

Melee Weapon Attack: +16 to hit, reach 20 ft., one target
Hit: 34 (4d12 + 9) slashing damage plus 14 (4d6) necrotic damage.

Bite of the First Pact

Melee Weapon Attack: +16 to hit, reach 10 ft., one target
Hit: 32 (4d10 + 9) piercing damage plus 18 (4d8) fire damage.

Cataclysmic Stomp (Recharge 5–6)

The Behemoth slams the ground. Each creature within 30 feet must make a DC 22 Dexterity saving throw or take 45 (10d8) bludgeoning damage, be knocked prone, and restrained under shattered terrain (escape DC 22).

Aura of the Demon Lord

Creatures of the Behemoth’s choice within 30 feet must succeed on a DC 21 Wisdom saving throw or be frightened until the end of their next turn. Creatures already frightened instead take 14 (4d6) psychic damage.

The Behemoth can take 3 legendary actions, choosing from the options below:

Move. The Behemoth moves up to half its speed without provoking opportunity attacks.

Crushing Swipe. Makes one Abyssal Cleaver attack.

Abyssal Roar (Costs 2 Actions). Each creature within 60 feet must succeed on a DC 21 Wisdom save or be frightened for 1 minute (repeat save at end of turn).