Green Abishai

AC 18 (natural armor)

HP 195 (26d8 + 78)

Speed 30 ft., fly 40 ft.

Saving Throws INT +8, CHA +9

Skills Deception +9, Insight +6, Perception +6, Persuasion +9

Resistances Cold; Bludgeoning, Piercing, Slashing (from nonmagical attacks that aren't silvered)

Immunities Fire; Poison

Condition Immunities Poisoned

Senses darkvision 120 ft., Passive Perception 16

Languages Draconic, Infernal, telepathy 120 ft.

CR 15

Traits

Devil's Sight. Magical darkness doesn't impede the abishai's darkvision.

Magic Resistance. The abishai has advantage on saving throws against spells and other magical effects.

Actions

Multiattack. The abishai makes two Fiendish Claw attacks, or it makes one Fiendish Claw attack and uses Spellcasting.

Fiendish Claw. 8 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) force damage. If the target is a creature, it must succeed on a 16 Constitution saving throw or take 16 (3d10) poison damage and become poisoned for 1 minute. The poisoned target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.