Devil's Horn of endless maze. The devil summons three spirits from the abyss

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

Clone Creation. The devil creates a series of clones of him and/or his opponent.

Multiattack. The devil makes three attacks.

Cloned Claw. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 8 (1d8 + 4) slashing damage.

Dark Sting. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) piercing damage plus 17 (5d6) poison damage, and the target must succeed on a DC 14 Constitution saving throw or become poisoned for 10 minute. The target can repeat the saving throw at the end of each of its turns, it ending the effect on itself on a success if it did not die.

Acid Spit. Melee  Attack: +8 to hit, reach 10 ft., one target. Hit: 8 (1d8 + 4) piercing damage