Butcher of the Hoarde

Spellcasting. The Butcher of the Horde is a 5-level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). The Butcher has the following Warlock spells prepared:

Cantrips (at will): Booming Blade, Eldritch Blast, Green-Flame Blade 
3rd level (3 slots): Crown of Madness, Hold Person, Counter Spell, Fear, Haste, Vampiric Touch

Multiattack. The Butcher of the Hoard makes 7 attacks: 1 with its Bone Club, 3 with it's claws, 2 with it's wings, and 1 with it's horns.

Bone Club. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 9 (1d12 + 3) bludgeoning damage.

Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage. For each successful claw attack on the same creature beyond the first, the Butcher deals an additional 1d6 (3) points of slashing damage.

Wing. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 5 (1d4 + 3) piercing damage.

Horns. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) piercing damage.

Fueled By Death. If the butcher brings a creature to 0 hp or less, it may cast a spell it knows as a bonus action. This ability may only be used once per round. The butcher must still expend spell slots to cast spells other than cantrips. It may also instead choose to regain an expended spell slot.