Nice!
I liked it, and it is not because im a pokemon fan or something like that (and actually im not a pokemon fan), it is just the elements that collects to make all attacks, except for ones that are sprites combinations, very good combinations I must say. Anyway, if there is going to be a sequel, there is a message after the battle that says: "Mewtwo minons awaken..."
So the idea may come that way. But if it is still to much on the air, then I may be wrong.