Ring Out (Smash in League style)

If I were to choose two of my most valued games, it would be Smash and League of Legend So what if we were to combine those two together...?

The Idea is simple: Each side would be placed in a round (Preferably one like the ascension) map. There are NO more auto-attacks, and all sorts of attacks are only spells. Instead of losing health when you get damaged, you would get instead, percentage. You get knocked back when you are hit by any sort of spells. More the percentage, more the knock back. At the outer circle of the map, there would be zones where if you are launched there, you automatically die.

Thoughts?