@Override
public void declareBlocker(UUID defenderId, UUID blockerId, UUID attackerId, Game game) {
Permanent blocker = game.getPermanent(blockerId);
CombatGroup group = game.getCombat().findGroup(attackerId);
if (blocker != null && group != null && group.canBlock(blocker, game)) {
group.addBlocker(blockerId, playerId, game);
game.getCombat().addBlockingGroup(blockerId, attackerId, playerId, game);
} else {
if (this.isHuman()) {
game.informPlayer(this, "You can't block this creature.");