Emmett Brown ( Wizard )

This wizard doesnt giving any bonuses,just infinite waves and when battle starts,gives to inventory potion(named by devs) to end a game and going bonus round Minimal wave to end is 200

This already exists. It's named Azathoth.

I mean infinite count of levels,now is maximal 500 and my idea is infinite

That would be pretty broken :-) With continued drops, I'm not sure if the game would ever end...

Yeah,or invent something for more levels,because sometimes i didnt get all epic towers,so my idea is more waves to get better chance to get all towers