Vego the virus (champion concept)

Vego is a jungler. He is a virus. Whatever he last hits he is able to take over and gain the champions/monsters(excluding baron)/dragons body and use it as a champion. Kill a riven, take her body and skill set until you are killed. Kill a drake, become a drake. kill blue buff become blue buff( sort of like daisy). Nothing really more to it than that. I know it needs more detail, but that's what i got for now lol