A really cool concept. I did like the way the wave grows as the card is drawn. It does bring balance and freedom to the player. But it does break the flow or rather the continuity of the game. I would love to see if you can implement both the ideas(balance and flow) in your game in some other way. Regarding your take on this Hybrid theme, I really loved the mashup of 2 different game genres. I would love if you would check out my game as I have tried to bring together 2 different games. And give me some suggestions.