Ethereal Hag

Each humanoid chosen by the hag that starts its turn within 30 feet of the hag and can see her must make a Wisdom saving throw against your spell save DC. On a failed save, the creature is frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, with disadvantage if the hag is within line of sight, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the hag's Horrific Appearance for the next 24 hours.

The hag can mimic animal sounds and humanoid voices. A creature that hears the sounds can tell they are imitations with a successful Wisdom (Insight) check at DC 8 + PB + your Charisma modifier.

Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d8 + PB slashing damage + 1d6 psychic damage.

The ethereal hag magically enters the Ethereal Plane from the Material Plane, or vice versa.