Ao Jun

Special Trait Name. Bad ass spells.

Spellcasting. The Ao Jun is a 7-level spellcaster. Its spellcasting ability is wisdom. (spell save DC #, +# to hit with spell attacks). The Ao Jun has following Lich spells prepared:
Cantrips (at will): fireball, melf's acid arrow 
7nth level (7 slots): Lighting of Hell, Sniper of Heaven 

9nth (5 slots): Flame of Magma

Action Name. Acid cannons

Action Melee Attack. Melee Weapon Attack: +9 to hit, reach 5-15 ft., # target. Hit:  (10d8+20) fire damage. 

Action Ranged Attack. RangedWeapon Attack: +6 to hit, range 700/1578 ft., # target. Hit: (5d20+15) acid damage.

Reaction Name. It has blindsight.

Fly in stealth while attacking.

Legendary Action Name ''Can't Get Me''. The Ao Jun will decide to fly when it is almost dead.  The Ao Jun can keep aloft for 1 hour. While it is flying it is in stealth so your party gets a -8 to hit. It can still attack while in the air.