Night Hag

Melee Weapon Attack: +5 to hit reach 5 ft. one creature. Hit: 12 (2d8 + 3) slashing damage and the target is subject to the hags Curse trait.

Melee Spell Attack: +5 to hit reach 5 ft. one creature. Hit: The target falls asleep for 4 hours or until it takes damage or is shaken awake. Once the hag successfully hits a target it can't make this attack again until it finishes a long rest.

The hag magically polymorphs into a Small or Medium humanoid. Equipment it is carrying isnt transformed. It retains its claws in any form. It has no true form and remains in its current form when it dies.

The hag magically enters the Ethereal Plane from the Material Plane or vice versa. Alternatively the hag is magically transported to the Material Plane Hell or the Abyss arriving within 10 miles of its desired destination.

While on the Ethereal Plane the hag magically touches a sleeping creature that is under the night hags Curse and is not protected by a magic circle or protection from evil and good spell or similar magic. As long as the touch persists the target has terrible nightmares. If the nightmares last for 1 hour the target gains no benefit from the rest and its hit point maximum is reduced by 5 (1d10) until the curse ends. If this effect reduces the targets hit points maximum to 0 the target dies and the hag captures its soul. The reduction to the targets hit point maximum lasts until removed by greater restoration or similar magic.