Psychosis. Pure Insanity renders Yawa immune to Psychic damage

Pseudo-Deific. Yawa can cast any spell without using Materials

Spellcasting. Yawa is an 8th-level spellcaster. His spellcasting ability is Charisma. Yawa has following Warlock spells prepared:
Cantrips: Eldritch Blast, Chill Touch

1st level: Hellish Rebuke, Expiditious Retreat

2nd level: Ray of Enfeeblement, Shatter

3rd level: Counterspell, Vampiric Touch

4th level: Blight, Hallucinatory Terrain

6th level: Eyebite, Circle of Death

7th level: Finger of Death

8th level: Feeblemind

Syphonith Summon. Yawa summons 1d4 Syphonith onto the battlefield

Ether Claws. Melee Weapon Attack: +2 to hit, reach 10 ft., 1 target. Hit: 3d8 Lightning damage. 

Burning Bolt. Ranged Weapon Attack: +2 to hit, range 60 ft., 1 target. Hit: 3d8 Fire damage.

Ether Burst. Upon being struck with a melee attack, Yawa can unleash a magic burst which deals 2d4 Force damage to the assailant, and pushes them 10 ft away

Summon Syphonith+ (Costs 2 Actions). Yawa summons 2 Syphonith+ onto the battlefield, then ascends into the air

Halo Bolt (Costs 1 action). After using Summon Syphonith+, Yawa can unleash a bolt from the crude halo atop his head. It strikes the ground at any point within 60 ft of directly below him, and forms a 15ft radius hemisphere of energy, dealing 4d8 Lightning damage to every entity within that area.

Burning Storm (Costs 3 Actions). Enter the description for your mythic action. Yawa unleashes all 16 of his Fire Spears, which can each hit any point within 60ft, dealing 2d12 Fire damage to any entity one hits, per spear.