Doresain the ghoul king

King of ghouls (recharges on a 6). Doresain can summon 1d10 ghouls as an action, each has there own initiative. The ghouls appear within 100ft of doresain. 

Turn Resistance. Doresain has advantage on saving throws against any effect that turns undead.

Special weapon. Doresain owns a cloak of mouths and a magical sword called Toothlust.

Innate Spellcasting. Doresain’s spellcasting ability is Wisdom (dc 17, +7 to hit). He can innately cast the following spells, requiring no material components:

• At will: detect magic
• 3/day each: dispel magic, Freedom of movement, mage armor, eye bite, finger of death
• 1/day: teleport

Legendary Resistance (3/Day). If Doresain fails a saving throw, he can choose to succeed instead.

Magical weapon. all doresain's weapon attacks count as magical.

Multi attack. Doresain makes 3 attacks, one with its bite .

Bite. Melee Weapon Attack: +13 to hit, reach 5 ft., 1 target. Hit: 20 (6d4 + 6) [piercing] damage. 

Toothlust. Melee Weapon Attack: +16 to hit, reach 5 ft., 1 target. Hit: 18 (3d6+ 9) [slashing ] damage and the target must make a dc 19 con save or be poisoned, while poisoned in this way at the start of there turn the target's maximum hit points are reduced by 1d10, If the targets maximum hit points are reduced to 0 then the target dies and becomes a ghoul.

Cloak of mouths. Melee Weapon Attack: +16 to hit, reach 10 ft., 1 target. Hit: 21 (3d8 + 9) [necrotic] damage. 

Doresain 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. Doresain regains spent legendary actions at the start of its turn.

Attack (Costs 1 Actions). Doresain uses its bite attack once.

Cast a spell (Costs 2 Actions). Doresain uses a spell from its spell list.

Raise ghasts (Costs 3 Actions). Doresain summons 1d4 ghasts within 120ft of himself.