black knife assassin

evasion. if the assassin is subjected to an effect that allows it to make a dexterity saving throw to take only half damage, the assassin instead takes no damage if it             succeeds on the save and only half damage if it fails. it can't use this trait if it has the incapacitated condition.

shadow stealth. if the assassin is in dim light or darkness, the assassin can take the hide action as a bonus action

multiattack. the assassin make three attacks, using the black knife

quick slash. Melee Weapon Attack: +7 to hit, reach 5 ft., 1 target. Hit: 10 (1d6 + 5) slashing damage plus 15 (5d6) Necrotic damage, and the target take (1d6)                    at the start of the assassins next turn.

blade of death. ranged Weapon Attack: +7 to hit, range  10/60ft., 1 target. Hit: 20 (2d6 + 5) necrotic damage plus 20 (6d6) necrotic damage, and the target takes (1d6) necrotic damage for the assassins next 2 turns.

cunning action. the assassin takes the dash, disengage, or hide action.