Captivating Killer, Langrouse

Telepathic Bond. Langrouse ignores the range restriction on his telepathy when communicating with a creature he has charmed. The two don't even need to be on the same plane of existence.

Shapechanger. Langrouse can use his action to polymorph into a Small or Medium humanoid, or back into his true form. Without wings, Langrouse loses his flying speed. Other than his size and speed, his statistics are the same in each form. Any equipment he is wearing or carrying isn't transformed. He reverts to his true form if he dies.

Multiattack. Langrouse makes three attacks: two with his claws, and one from the options below.

Claw (Fiend Form Only). Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 14 (4d6 + 3) slashing damage.

Charm. One humanoid Langrouse can see within 30 feet of him must succeed on a DC 20 Wisdom saving throw or be magically charmed for 1 day. The charmed target obeys Langrouse's verbal or telepathic commands. If the target suffers any harm or receives a suicidal command, it can repeat the saving throw, ending the effect on a success. If the target successfully saves against the effect, or if the effect on it ends, the target is immune to Langrouse's Charm for the next 24 hours.

Draining Kiss. Langrouse kisses a creature charmed by him or a willing creature. The target must make a DC 23 Constitution saving throw against this magic, taking 65 (10d10 + 5) psychic damage on a failed save, or half as much damage on a successful one. The target's hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.

Etherealness. Langrouse magically enters the Ethereal Plane from the Material Plane, or vice versa.

Love Bite. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 20 (3d10+5)piercing damage. Langrouse regains hitpoints equal to the amount of damage dealt.