Mimikyu (5e Creature)
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Small aberration, any alignment
Cursed Body. A creature that hits the mimikyu with a melee attack while within 5 feet of it must succeed on a DC 15 Wisdom saving throw or be frightened of the mimikyu for 1 minute. A creature can repeat this saving throw at the start of each of its turns, ending the effect on a success.
Magic Weapons. The mimikyu's weapon attacks are magical.
Shadow Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) slashing damage plus 7 (2d6) psychic damage.
Let's Snuggle Forever (1/day). The mimikyu reveals its true form to a creature within 60 feet of it. If the creature can see the mimikyu, it must succeed on a DC 15 Wisdom saving throw or take 55 (10d10) psychic damage and be frightened of the mimikyu for 1 minute. On a successful saving throw, the creature takes half as much damage and isn't frigthened.
Disguise. In response to taking damage from any source, the mimikyu instead takes no damage.