I think it's too broken. The mana stops mattering after a certain amount of turns, and the monsters on the field is of most importance. If you don't have any outs you simply lose the game just like that. I think it should have an errata where ir states you can only have max 2 cards other than itself. Cuz they got ways to protect their nexus, they just gonna stall you out and then use it just like that when I have an op board set up and basicly no cards left in hand. My only out is deny.