Active when you have certain number pieces of this class on board, each level of the same synergy effect stacks 1: When the chess player receives more than 2 damage, it'll block 20% damage for the chess player 2: When the chessplayer receives more than 2 damage, blocks {0} damage for the chessplayer; and if the chessplayer receives more than 8 damage, gets Green Essence x1