New Idea of Champion skills

(Bad English I'm not native speaker.) It is nothing more than a thought that I come up like 1 minutes ago. Remember how people spend time to remember the combos on Arcade machines? How a bout a champion that shoot a lots of different skills not untill player pressed three or four or even more keys? For example, QWE is fire ball, WEQ is blackhole, WREQ is earthquick whatso ever... It will be different from Ryze . The major idea is the techonic of trying to remember different sequnence of pressing key will be the major way to play this new Champion. Please someone tell me if this could work!!!