Grallath
Hey guys this is my first idea for a champion hope you like it. Any constructive feedback is welcome! Grallath the Master Shaman
Passive: Nimble- Grallath gains movement speed off of extra attack speed and gains extra attack speed off of bonus movement speed. (Does not stack)
Q-Iced Blade- Grallath coats his sword in true ice, causing his next attack to deal true damage equal to his attack damage and slow.
W-Fire Burst- Grallath blasts a lick of flame at targeted enemy dealing flat magic damage (+.6 of bonus Attack Damage) and setting the target ablaze for a short amount of time (damage is equal to .8 of total Attack Damage)
E-Fierce Lightning- Grallath calls down a bolt of lightning to strike target enemy, dealing flat magic damage (+.7 Bonus AD) while also granting himself a bonus attack and movement speed buff. Can be cast on ally to give the buff.
R-Shamanistic Virtue- Grallath takes on a certain aspect depending on the last ability he used. While in aspect form all of Grallath's abilities are locked. Apsects last for 15 seconds at max rank.
Frost Aspect- Grallath takes on the aspects of a terrifying blizzard, causing a flurry of hail and snow to surround him, dealing damage and slowing nearby enemies.
Fire Aspect- Grallath takes on the aspects of a mighty flame, dealing bonus magic damage (+.6 of base AD) and setting targets ablaze with basic attacks.
Lightning Aspect- Grallath takes on the aspects of a brutal storm, gaining massive amounts of movement and attack speed.
Haven't thought up the Lore yet but will do. He's supposed to be Olaf's brother, but as Olaf had washed up on Noxian shorelines, Grallath washed upon the shore of Demacia. Something like that. Thanks for reading!
. RNG is not a fun thing to lose to early game when not accounting for crits, which you have to sacrifice a lot for if you rune for it, or even if you buy crit % its still a lot. Also, critical hits can still be mitigated. Dodges negate all damages from that basic attack. I suggest a % chance or a proc every X seconds to reduce damage from a basic attack or spell by 25%. That way it's still similar to your original idea, and its a little more balanced since it's not completely avoiding all damage.