Magic Resistance. The achaierai has advantage on saving throws against spells and other magical effects.
Multiattack. The achaierai makes two attacks with its Talons and one attack with its Beak.
Beak. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:14 (3d6 + 4) piercing damage.
Talons. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit:8 (1d8 + 4) slashing damage.
Spring Attack. The achaierai takes the Disengage action.
Defensive Cloud. After taking damage the achaierai can use its reaction to release a cloud of poisonous gas in a 10-foot-radius. All creatures in the cloud take 7 (2d6) poison damage and must succeed on a DC 15 Constitution saving throw or be poisoned for 1 minute. While poisoned the target is confused as if from a confusion spell. At the end of its turns, the affected target can repeat the Constitution saving throw. If it succeeds the confusion ends. Achaierai are immune to the effects of this cloud.
Dwelling mostly in the Underdark, achaierai are cunning avian quadrupeds originally from the plane of Acheron. Tribalistic and organized, they possess a strong—if skewed—sense of justice and will often band together to seek bloody vengeance against those who have wronged their kin. They are highly intelligent, with a strong streak of sadistic cruelty, compelling them to devise new and inventive strategies of torture for their victims.