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 *        of conditions and the following disclaimer in the documentation and/or other materials
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package mage.cards.s;

import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.common.BlocksTriggeredAbility;
import mage.abilities.effects.ContinuousEffect;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.continuous.SetPowerToughnessTargetEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.Duration;
import mage.constants.Outcome;
import mage.filter.common.FilterCreaturePermanent;
import mage.filter.predicate.permanent.BlockedByIdPredicate;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.Target;
import mage.target.common.TargetCreaturePermanent;
import mage.target.targetpointer.FixedTarget;

/**
 *
 * @author LevelX2
 */
public class SereneMaster extends CardImpl {

    public SereneMaster(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.CREATURE},"{1}{W}");
        this.subtype.add("Human");
        this.subtype.add("Monk");

        this.power = new MageInt(0);
        this.toughness = new MageInt(2);

        // Whenever Serene Master blocks, exchange its power and the power of target creature it's blocking until end of combat.
        this.addAbility(new BlocksTriggeredAbility(new SereneMasterEffect(), false));

    }

    public SereneMaster(final SereneMaster card) {
        super(card);
    }

    @Override
    public SereneMaster copy() {
        return new SereneMaster(this);
    }
}

class SereneMasterEffect extends OneShotEffect {

    public SereneMasterEffect() {
        super(Outcome.Benefit);
        this.staticText = "exchange its power and the power of target creature it's blocking until end of combat";
    }

    public SereneMasterEffect(final SereneMasterEffect effect) {
        super(effect);
    }

    @Override
    public SereneMasterEffect copy() {
        return new SereneMasterEffect(this);
    }

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        Permanent sourceCreature = game.getPermanent(source.getSourceId());
        if (controller != null && sourceCreature != null) {
            FilterCreaturePermanent filter = new FilterCreaturePermanent("creature it's blocking");
            filter.add(new BlockedByIdPredicate((source.getSourceId())));
            Target target = new TargetCreaturePermanent(filter);
            if (target.canChoose(source.getSourceId(), controller.getId(), game)) {
                if (controller.chooseTarget(outcome, target, source, game)) {
                    Permanent attackingCreature = game.getPermanent(target.getFirstTarget());
                    if (attackingCreature != null) {
                        int newSourcePower = attackingCreature.getPower().getValue();
                        int newAttackerPower = sourceCreature.getPower().getValue();
                        ContinuousEffect effect = new SetPowerToughnessTargetEffect(newSourcePower, sourceCreature.getToughness().getValue(), Duration.EndOfCombat);
                        effect.setTargetPointer(new FixedTarget(source.getSourceId()));
                        game.addEffect(effect, source);
                        effect = new SetPowerToughnessTargetEffect(newAttackerPower, attackingCreature.getToughness().getValue(), Duration.EndOfCombat);
                        effect.setTargetPointer(new FixedTarget(attackingCreature.getId()));
                        game.addEffect(effect, source);
                        return true;
                    }
                }
            }

        }
        return false;
    }

}