(Champion Concept) Arilian, The Queen of the Elements

I am starting to work on this concept. It is an Shamanistic Arc type Champion. I know that this particular Arc Type has Been Frowned upon by the Community but I wish to pursue making a Shaman Champion Concept.

Innate Ability : Storm Chain - A Storm revolves around Arilian's Mace. After 7/6/5 Auto Attacks a Chain of Storms launches out hitting the initial target plus 1/2/3 additional targets with reduced damage

Q: Ignis's Fury - Arilian Calls to the Planes of Fire and launches a ball of fire in a Straight line. Once the Fireball hits a target it explodes splashing other targets.

W: Earthen Fracture - Arilian Stomps on the Ground causing the earth in front of her to Fracture in a Straight Line. The first target hit is stunned for 1/1.25/1.5/1.75/2 seconds

E : Rushing Whirlpool - Arilian calls out to the Planes of Water and summons Whirlpool. If Enemy Minions or Champions are caught in this they are slowed for 20%/25%/30%/35%/40%, When Ally Minions or Champions they receive a Movement Speed Boots 20%/25%/30%/35%/40%

R: Elemental Enrage - Arilian's Element Powers become Enraged Giving Stronger effects to her Ignis's Fury, Earthen Fracture, and Rushing Whirlpool.

Q - The splash is Replaced with Fireballs that prioritize the champion over minions. the Fireball Splits into 2/3/4 fireballs.

W - Increases Missile Speed and Radius of the Spell

E - The waters of the Whirlpool churn faster Increasing the Slow to a 50%/60%/70%

I know I dont have a huge chunk of numbers other than the slows and Stuns. I will be working on fine tuning the damage numbers, spell width, and the other finer details. if you have any suggestion I am open to hearing what you have to say.