Demilich
HP 180 (72d4)
Speed 5 ft., Fly 30 ft. (hover)
Resistances Bludgeoning, Piercing, Slashing
Immunities Necrotic, Poison, Psychic; Charmed, Deafened, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned, Prone, Stunned
Senses Truesight 120 ft., Passive Perception 13
Languages None
CR 18 (XP 20 000, or 22 000 in Lair; PB +6)
Traits
Legendary Resistance (3/Day, or 4/Day in Lair). If the demilich fails a saving throw, it can choose to succeed instead.
Undead Restoration. If the demilich is destroyed, it reforms and regains all its Hit Points in 1d10 days unless a Wish spell is cast on its remains.
Actions
Multiattack. The demilich makes three Necrotic Burst attacks.
Necrotic Burst. Melee or Ranged Attack Roll: +11, reach 5 ft. or range 120 ft. Hit: 24 (7d6) Necrotic damage.
Howl (Recharge 5–6). Constitution Saving Throw: DC 19, each creature in a 30-foot Emanation originating from the demilich. Failure: 70 (20d6) Psychic damage. Failure or Success: The target has the Frightened condition until the start of the demilich's next turn.
Legendary actions
Energy Drain. Constitution Saving Throw: DC 19, one creature the demilich can see within 120 feet. Failure: The target's Hit Point maximum decreases by 14 (4d6). Failure or Success: The demilich can't take this action again until the start of its next turn.
Grave-Dust Flight. The demilich flies up to its Fly Speed, shedding grave dust. Each creature within 5 feet of the demilich as it moves is targeted once by the following effect. Constitution Saving Throw: DC 19. Failure: The target has the Blinded condition until the end of the demilich's next turn. Failure or Success: The demilich can't take this action again until the start of its next turn.
Necrosis. The demilich makes one Necrotic Burst attack.
