Chichimec

Charisma drain. On a critical hit the target must make a dc 22 charisma saving throw or have their charisma reduced by 1 point. 

Dive Attack. If the chichimec is flying and dives at least 30 ft. straight toward a target and then hits it with a melee weapon attack, the attack deals an extra 9 (2d8) damage to the target.

Flyby. The chichimec doesn’t provoke an opportunity attack when it flies out of an enemy’s reach.

Regeneration. The chichimec regains 10 hit points at the start of its turn. If the chichimec takes acid or radiant damage, this trait doesn’t function at the start of the chichimec's next turn. The chichimec dies only if it starts its turn with 0 hit points and doesn’t regenerate.

Legendary Resistance (3/Day). If the chichimec fails a saving throw, it can choose to succeed instead.

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

Magic Weapons. The chichimec’s weapon attacks are magical.

Innate Spellcasting. The chichimec’s innate spellcasting ability is Charisma (DC 25). It can innately cast the following spells, requiring no material components:

• At will: darkness, telekinesis 
• 3/day: invisibility, control weather, call lightning, lighting bolt, chain lightning, psychic scream

Multi attack. The chichimec makes two primary wing attacks and six secondary wing attacks and one tail attack. 

Primary wing. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 19 (2d12 + 7) bludgeoning damage. 

Secondary wing. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 10 (1d6 + 7) bludgeoning damage. 

Tail. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 13 (2d6 + 7) bludgeoning damage. 

Summon air elemental (3/day). The chichimec summons an air elemental which appears in an adjacent space to them and rolls its own initiative. 

The chichimec can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The chichimec regains spent legendary actions at the start of its turn.

Move (Costs 1 Actions). The chichimec moves half its flying speed and doesn't provoke attacks of opportunity. 

Attack (Costs 2 Actions). The chichimec makes two primary wing attacks. 

Extreme speeds (Costs 3 Actions). The chichimec takes the dash action and doesn't provoke attacks of opportunity.