Ao Shin, The Storm Serpent

Ao Shin is a Celestial Dragon and creator of The Storm, a huge lightning storm that rages off the shores of Mount Targon. When he heard of his brother’s enslavement, when he was nearly trapped the same way mere centuries ago, he was furious. He wages a war against Targon’s Aspects to free his brother, wielding the Storm as a weapon.

In game, Ao Shin is an AP mage/fighter, using powerful assaults that chain to enemies.

(This is my idea for Ao Shin's possible kit. If you don't agree, you may suggest changes in the comments.)

Abilities
Passive: The Storm’s Rage

Hitting enemies with basic attacks, spells, or CC marks them with Thunderous Blight.

Thunderous Blight: Auto attacks and basic spells against enemies inflicted with it will gain bonus damage and effects.

Q: Storm Bolt

3 second cooldown

Release a powerful lightning bolt at a target enemy, dealing 200 (+50% bonus AP) magic damage. Inflicts Thunderous Blight upon enemy champions hit. Damages enemies in an area around a target with Thunderous Blight.

W: Shocking Wave

7 second cooldown

Release a wave of electricity in a cone, knocking back enemy champions and dealing 200 (+ 50% bonus AP) magic damage. Inflicts Thunderous Blight on enemies hit. Enemies with Thunderous Blight are stunned for 2.5 seconds.

E: Conductive Shield

Passively create a shield equal to 10% (+1% for every 100 bonus AP) of your max health. When enemies hit you, it activates, releasing multiple Storm Bolts at enemy champions, dealing continuous magic damage and inflicting Thunderous Blight.

R: Thunderous Guillotine

Channel for 3.5 seconds. After channeling, release 5 massive thunder bolts that strike enemies throughout the map, dealing 20% of enemy champions max health as bonus magic damage.