Assume Identity. When a Small or Medium creature dies within 10 feet of the visage, the visage can use a reaction to polymorph into an exact duplicate of that creature, also gaining all of the creature’s memories, languages, and movement speed. While polymorphed in this manner, the visage has advantage on Charisma (Deception) and Charisma (Performance) checks when trying to pass itself off as the creature it is polymorphed into, and a speak with dead spell that targets the corpse lets the visage reply rather than the corpse. Other than its movement speed and size, its statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.

The visage can return to its normal form as an action. Otherwise, the effect lasts for a maximum of 7 days. A creature can’t be returned to life by any means, so long as the visage has assumed its identity.

Create Spawn. If a fiend or humanoid is slain by the visage, its corpse rises as a new visage 7 days later unless the remains are burned.

Innate Spellcasting. The visage’s innate spellcasting ability is Charisma. It can innately cast the following spells (spell save DC 15), requiring no material components:

At will: major image, minor illusion

3/day each: dominate person, hypnotic pattern

1/day each: dominate monster, invisibility, mental prison, project image

Magic Resistance. The visage has advantage on saving throws against spells and other magical effects.

Multiattack. The visage makes two attacks.

Claw. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage plus 17 (3d10) psychic damage.

Mental Assault. Ranged Spell Attack: +7 to hit, range 120 ft., one creature. Hit: 25 (4d10 + 3) psychic damage.