Armor Class 19 (natural armor)
Hit Points 136 (16d8 + 64)
Speed 40 ft.
Saving Throws DEX +8, INT +5
Skills Acrobatics +8, Deception +6, Perception +6, Stealth +12
Damage Resistances [object Object]
Damage Immunities poison
Senses passive Perception 16
Languages Languages of the host
Challenge 12
Assassinate. During its first turn, the Slayer has advantage on attack rolls against any creature that hasn't taken a turn. Any hit the Slayer scores against a surprised creature is a critical hit.
Devil's Sight. Magical darkness doesn't impede the Slayer's darkvision.
Magic Resistance. The Slayer has advantage on saving throws against spells and other magical effects.
Multiattack. The Slayer makes four Claw attacks.
Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage plus 7 (2d6) poison damage. The Slayer deals an extra 14 (4d6) slashing damage when it has advantage on the attack roll and hits the target.
CoA, p. 30