Any ideas? i got one :3

I was wondering if this would be possible im thinking of an awesome champion idea and was hoping someone could make.

so first off his powers would be to control shadows like a blade its the same idea's from anime like Fullmetal alchemist BH. along with the demon sword from soul eater. do i have you attention now? good :3 so he would be able to control it like an extension of his blade using abilities doing slashes n impaling.

Passive: so his passive would put a shadow counter on a champion or minion where it would stay on for 5 seconds unless another counter is added these will help for other abilities.

Q: this would be a slash from your sword releasing a dark energy dealing large amount of dmg. (if any shadow counters are on champions they take extra dmg.)

W; this would use any and all shadow counters to create spikes impaling them from their own shadows like spears.

E: this would be a way to escape danger or sneak up on danger by becoming a shadow you would be like vlads blood pool except you look like a persons shadow without the person. this makes you immune to attacks for 4 maybe more secs and allows you to end it early to deal a critical hit on anyone.

Ult: this made me really like the idea of shadows and darkness because you can make your shadow fight with you! mhm your double comes out from the groud instantly spikes follow giving him the first area hit. he would fight normal once in a while spike would apear for an area attack and when he dies any shadow counter he made is used as dmg half as much as your w.

looking at this it doesnt look very impressive but i really wanna see someone do this :3