Arabella Castelli, the Irradiated Scientist
Ignore the links, I was trying to post a picture, but apparently I don't have the mental capacity to figure it out.
Concept: I'll keep it simple. A Zaun scientist who fell in one of the reactors that powers the cities. She's on the run from accidently killing people because her body constantly leaks radiation. She's an ap melee champ.
Passive: Arabella's basic attacks and abilities radiate her enemies. When her enemies are 100% radiated her abilities interact differently. Basic attack do more damage based on how radiated the target is. All abilities consume radiation when it's at 100%
Q: Rad Blast Arabella sends out a blast of radiation in front of her. It's similar to a mordekaiser Cone. Inflicts a certain amount of radiation on the target and damages them. At full radiation it it places a dot that deals 8-10%hp over 4 seconds.
W: Thrust Arabella Shoots radiation out of her feet in a large blast, sending her flying in a targeted direction(not very far, and CC is able to knock her out of it.). If a fully radiated target is within 15-50 units it consumes it and heals her, 20% per iraadiated target. 5 fully iradiated targets is a full heal. If there are no irratiated targets she suffers an 80% 1 second slow.
E: Mutation Arabella attacks in a sweeping motion with her arm. Mutating it to a larger scale to sweep a decent sized area. Fully irradiated target hit take a 1.5 second stun. If not irradiated they suffer a brief displacement(think draven's little displacement thing).
R: Living Bomb Arabella infuses an enemy with much more radiation than can be handled. The target suffers a 3 second slow, then at the end Explaodes in a ziggs ult style. All enemies caught in the explosion are fully irradiated.