New Champ Idea

I was thinking how cool would it to be to have a mage mid lane type champ that was a scientist of some sorts who specialized with the void. His q,w,e would all be abilities equivalent to him drawing on the void and using the power to beat his oppenents. This scientist would obviously know the dangers of the void, which relates to his r. His ultimate ability would completely change his appearance into this void demon creature almost, occurring when the scientist has used his abilities enough times or maybe even just whenever it's available. This would cause him to completely lose his personality and sense of self and only look to destroy, empowering his q,w,e abilities greatly and giving him greater ap for the duration of his ult. Almost like a gnar passive mixed with an appearance change like swains ult.

I think this champ would be awesome and due to the difference of appearance when he ult I feel as if his skins could be amazing let alone his concept

Let me know what y'all think I know it needs some work