Armor Class 13
Hit Points 66 (12d8 + 12)
Speed 30 ft., fly 30 ft.
Saving Throws DEX +5, CHA +4
Skills Stealth +7
Damage Resistances acid, fire, necrotic, thunder, [object Object]
Damage Immunities cold, lightning, poison
Condition Immunities exhaustion, grappled, paralyzed, petrified, poisoned, prone, restrained
Senses darkvision 120 ft., passive Perception 11
Languages Abyssal, telepathy 120 ft.
Challenge 4
Incorporeal Movement. The demon can move through other creatures and objects as if they were 3. It takes 5 (1d10) force damage if it ends its turn inside an object.
Light Sensitivity. While in bright light, the demon has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Shadow Stealth. While in dim light or darkness, the demon can take the Hide action as a bonus action.
Claws. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 10 (2d6 + 3) psychic damage or, if the demon had advantage on the attack roll, 17 (4d6 + 3) psychic damage.
Monster Manual (2014), p. 64