Armor Class 15 (natural armor)
Hit Points 120 (16d8 + 48)
Speed 30 ft.
Saving Throws CON +7, INT +8, WIS +7, CHA +7
Skills Arcana +8, Deception +7, History +8, Insight +7, Perception +7, Stealth +5
Damage Resistances cold, lightning, necrotic
Damage Immunities poison, [object Object]
Condition Immunities charmed, exhaustion, frightened, paralyzed, poisoned
Senses truesight 120 ft., passive Perception 17
Languages Deep Speech, Undercommon, telepathy 120 ft.
Challenge 10
Magic Resistance. The alhoon has advantage on saving throws against spells and other magical effects.
Turn Resistance. The alhoon has advantage on saving throws against any effect that turns undead.
Chilling Grasp. Melee Spell Attack: +8 to hit, reach 5 ft., one target. Hit: 10 (3d6) cold damage.
Mind Blast (Recharge 5–6). The alhoon magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 16 Intelligence saving throw or take 22 (4d8 + 4) psychic damage and be stunned for 1 minute. A target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Volo's Guide to Monsters, p. 172