Innate Spellcasting. The hag's innate spellcasting ability is Charisma (spell save DC 13). She can innately cast the following spells:
3/day each: disguise self (including the form of a Medium humanoid), fog cloud
Multiattack. The annis makes three attacks: one with her bite and two with her claws.
Bite. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit:15 (3d6 + 5) piercing damage.
Claw. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit:15 (3d6 + 5) slashing damage.
Crushing Hug. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit:36 (9d6 + 5) bludgeoning damage, and the target is grappled (escape DC 15) if it is a Large or smaller creature. Until the grapple ends, the target takes 36 (9d6 + 5) bludgeoning damage at the start of each of the hag's turns. The hag can't make attacks while grappling a creature in this way.
Annis hags lair in mountains or hills. Despite being hunchbacked and hump-shouldered, they are the largest and most physically imposing of their kind, standing eight feet tall.