Armor Class 20 (natural armor)
Hit Points 225 (30d8 + 90)
Speed 30 ft.
Saving Throws CON +9, INT +8, WIS +11, CHA +9
Skills Medicine +11, Nature +14, Perception +11, Survival +11
Damage Resistances cold, necrotic
Damage Immunities poison
Condition Immunities charmed, exhaustion, frightened, paralyzed, poisoned, stunned
Senses truesight 120 ft., passive Perception 21
Languages Common, Druidic, Sylvan
Challenge 18
Legendary Resistance (3/Day). If the lich fails a saving throw, it can choose to succeed instead.
Rejuvenation. If it has a phylactery, a destroyed lich gains a new body in 1d10 days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery.
Multiattack. The lich makes four attacks.
Poisonous Touch. Melee Weapon Attack: +9 to hit, reach 10 ft., one creature. Hit: 17 (5d6) poison damage, and the target must succeed on a DC 19 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Wither. Ranged Spell Attack: +9 to hit, range 60 ft., one target. Hit: 14 (4d6) necrotic damage.
Fire Storm (7th-Level Spell; 1/Day). The lich fills up to ten 10-foot cubes with fire. Every cube must be within 150 feet of the lich and occupy a space the lich can see, and each cube must have at least one face adjacent to the face of another cube. Each creature in the area must make a DC 19 Dexterity saving throw, taking 38 (7d10) fire damage on a failed save, or half as much damage on a successful one. The fire ignites flammable objects in the area that aren't being worn or carried. If the lich chooses, plant life in the area is unaffected by the spell.
Attack. The lich makes an attack.
Poison Prick (Cost 2 Actions). The lich targets one poisoned creature it can see within 30 feet of it. The target must succeed on a DC 19 Constitution saving throw or fall unconscious until the poisoned condition ends on it.
Sap Life (Costs 2 Actions). The lich targets one creature it can see within 30 feet of it. The target must succeed on a DC 19 Constitution saving throw or take 11 (2d10) necrotic damage. The lich regains a number of hit points equal to the amount of damage that the creature takes.
CM, p. 223