1 mana, 1 card puts a 7 mana card into graveyard, 2 mana, 1 card puts it onto the battlefield, 2nd round opponent can play every card in their hand without paying any man cost?
What a load of *. It's like playing a chess game where the opponent gets to make 10 moves to your one. I thought this game was supposed to be fair? Especially since your shuffle algorithm is pure *. Unless you play green or blue you get screwed on mana.

Cards that get rid of mana costs, produce 10 mana in 1 round or win the game in 1 move shouldn't even be introduced into the games mechanics let alone be banned. Their creators should lose their jobs for even suggesting such concepts.
Oh! And mill decks are just as bad. It's like playing chess with a pigeon. Your opponent knocks all your pieces off the board then struts around like they won the game.
Stop hiring idiots who bring moronic schemes into an otherwise awesome game.