Clockwork Wraith

Ethereal Shift. The Clockworth Wraith can shift into the Ethereal Plane as a bonus action and remain there until the start of its next turn.

Temporal Fracture (1/Short or Long Rest). The wraith distorts time for up to three creatures of its choice within 30 feet. Each chosen creature must make a DC 14 Wisdom saving throw or be affected as if by the slow spell until the end of the wraith's next turn.

Multiattack. The Clockworth Wraith makes two attacks: one with its Necrotic Touch and one with its Haunting Screech.

Necrotic Touch. Melee Weapon Attack: +6 to hit, reach 5 ft., one target.
Hit: (4d6 + 4) necrotic damage.
The target must succeed on a DC 14 Constitution saving throw or its hit point maximum is reduced by an amount equal to the necrotic damage taken. This reduction lasts until the target finishes a long rest.

Haunting Screech. The wraith emits a soul-chilling screech audible within 60 feet. Each creature that is not a construct must make a DC 14 Wisdom saving throw:

• On a failure, the creature takes psychic damage and becomes frightened for 1 minute.
• On a success, the creature takes half damage and is not frightened.
• A frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Opportunity Attack