Active when you have certain number pieces of this class on board, each level of the same synergy effect stacks 2: Change a random enemy unit into a penguin when battle starts for 6s 4：At the start of a battle, hexes a random enemy into penguin for 6s. And all Shamans get a buff: when killed by an enemy piece, hexes the enemy into a random chess piece of the same cost and the same star level.