Grappler. The wrestling demon  has advantage on attack rolls against any creature grappled by it.

Innate Spellcasting. The wrestling demon 's spellcasting ability is Intelligence (spell save DC 16). The wrestling demon  can innately cast the following spells, requiring no material components:

At will: darkness, detect magic, jump

1/day each: heat metal, levitate, power word stun

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

Multiattack. The wrestling demon makes four attacks: four with its fists. Alternatively, it makes two attacks with its fists and casts one spell.

Fist. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 2) bludgeoning damage.If the target is a Medium or smaller creature, it is grappled (escape DC 15). The wrestling demon has two pair of arms, each of which can grapple only one target.

Will snap. One grappled humaniod (that isn't a undead or construct) must make a constitution saving throw 20DC, on a failed result the target takes 3d4 piercing and 3d4 psychic nonlethal damage the target loses 2 wisdom until lesser restoration or similiar Magic is cast on it, on a successful one take only half as much damage and will not loss wisdom, if the target Has a wisdom score of 4 or lower it will do any thing the wrestling demon tells them, this effect Will end if lesser restoration is cast on the target, this effect does not work if the target is immune  to the charmed condition.