Molydeus

Huge fiend (demon), Chaotic Evil

Armor Class19 (natural armor)
Hit Points216 (16d12 + 112)
Speed40 ft.
STRDEXCONINTWISCHA
28 (+9) 22 (+6) 25 (+7) 21 (+5) 24 (+7) 24 (+7)
Saving ThrowsCha +14, Con +14, Str +16, Wis +14
SkillsPerception +21
Damage Vulnerabilities—
Damage Resistancescold; fire; lightning; bludgeoning, piercing, slashing from nonmagical attacks
Damage Immunitiespoison
Condition Immunitiesblinded; charmed; deafened; frightened; poisoned; stunned
Sensestruesight 120 ft., passive Perception 31
LanguagesAbyssal, telepathy 120 ft.
Challenge21

Traits

Legendary Resistance (3/Day).

If the molydeus fails a saving throw, it can choose to succeed instead.

Magic Resistance.

The molydeus has advantage on saving throws against spells and other magical effects.

Actions

Multiattack.

The molydeus makes one Demonic Weapon attack, one Snakebite attack, and one Wolf Bite attack.

Demonic Weapon.

Melee Attack Roll: +16 to hit, reach 15 ft., one target. Hit: 35 (4d12 + 9) force damage. If the target has at least one head and the molydeus rolled a 20 on the attack roll, the target is decapitated and dies if it can't survive without that head. A target is immune to this effect if it takes none of the damage, has legendary actions, or is Huge or larger. Such a creature takes an extra 27 (6d8) force damage from the hit.

Snakebite.

Melee Attack Roll: +16 to hit, reach 15 ft., one creature. Hit: 16 (2d6 + 9) poison damage. The target must succeed on a DC 22 Constitution saving throw, or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target transforms into a manes if this reduces its hit point maximum to 0. This transformation can be ended only by a wish spell.

Wolf Bite.

Melee Attack Roll: +16 to hit, reach 10 ft., one target. Hit: 25 (3d10 + 9) necrotic damage.

Legendary Actions

Attack.

The molydeus makes one Demonic Weapon or Snakebite attack.

Move.

The molydeus moves without provoking opportunity attack.

Cast a Spell (Costs 2 Actions).

The molydeus uses Spellcasting.

Spellcasting

The molydeus casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 22):

At will: dispel magic, polymorph, telekinesis, teleport

3/day: lightning bolt