I'm very surprised that after this season you haven't taken steps to balance the themes. Everyone that plays the game has realized that mystic is grossly over powered. Its embarrassingly unbalanced at this point. The biggest thing you could change to level the playing field is hallelujah. It's basically the anti arrow storm. But arrow storm is epic, does less damage and is the same cost. Since mystic is meant to gain an energy advantage, hallelujah should at least be 5 cost if not nerfed.