foul-magics/Mage.Sets/src/mage/sets/saviorsofkamigawa/SakashimaTheImpostor.java

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package mage.sets.saviorsofkamigawa;

import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.common.SimpleActivatedAbility;
import mage.abilities.common.SimpleStaticAbility;
import mage.abilities.common.delayed.AtTheBeginOfNextEndStepDelayedTriggeredAbility;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.abilities.effects.EntersBattlefieldEffect;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.CreateDelayedTriggeredAbilityEffect;
import mage.abilities.effects.common.ReturnToHandSourceEffect;
import mage.cards.CardImpl;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.Rarity;
import mage.constants.Zone;
import mage.filter.common.FilterCreaturePermanent;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.Target;
import mage.target.TargetPermanent;
import mage.util.functions.ApplyToPermanent;

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

    private static final String abilityText = "You may have {this} enter the battlefield as a copy of any creature on the battlefield, except its name is still Sakashima the Impostor, it's legendary in addition to its other types, and it gains \"{2}{U}{U}: Return Sakashima the Impostor to its owner's hand at the beginning of the next end step.\"";

    public SakashimaTheImpostor(UUID ownerId) {
        super(ownerId, 53, "Sakashima the Impostor", Rarity.RARE, new CardType[]{CardType.CREATURE}, "{2}{U}{U}");
        this.expansionSetCode = "SOK";
        this.supertype.add("Legendary");
        this.subtype.add("Human");
        this.subtype.add("Rogue");
        this.power = new MageInt(3);
        this.toughness = new MageInt(1);

        // You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is still Sakashima the Impostor, it's legendary in addition to its other types, and it gains "{2}{U}{U}: Return Sakashima the Impostor to its owner's hand at the beginning of the next end step."
        Ability ability = new SimpleStaticAbility(Zone.BATTLEFIELD, new EntersBattlefieldEffect(
                new SakashimaTheImpostorCopyEffect(), abilityText, true));
        this.addAbility(ability);
    }

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

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

class SakashimaTheImpostorCopyEffect extends OneShotEffect {

    public SakashimaTheImpostorCopyEffect() {
        super(Outcome.Copy);
    }

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player player = game.getPlayer(source.getControllerId());
        Permanent sourcePermanent = game.getPermanent(source.getSourceId());
        if (player != null && sourcePermanent != null) {
            Target target = new TargetPermanent(new FilterCreaturePermanent());
            target.setNotTarget(true);
            if (target.canChoose(source.getSourceId(), source.getControllerId(), game)) {
                player.choose(Outcome.Copy, target, source.getSourceId(), game);
                Permanent copyFromPermanent = game.getPermanent(target.getFirstTarget());
                if (copyFromPermanent != null) {
                    game.copyPermanent(copyFromPermanent, sourcePermanent, source, new ApplyToPermanent() {
                        @Override
                        public Boolean apply(Game game, Permanent permanent) {
                            if (!permanent.getSupertype().contains("Legendary")) {
                                permanent.getSubtype().add("Legendary");
                            }
                            permanent.setName("Sakashima the Impostor");
                            // {2}{U}{U}: Return Sakashima the Impostor to its owner's hand at the beginning of the next end step
                            permanent.addAbility(new SimpleActivatedAbility(Zone.BATTLEFIELD,
                                    new CreateDelayedTriggeredAbilityEffect(new AtTheBeginOfNextEndStepDelayedTriggeredAbility(new ReturnToHandSourceEffect(true)), false),
                                    new ManaCostsImpl("{2}{U}{U}")
                            ), game);
                            return true;
                        }
                    });

                    return true;
                }
            }
        }
        return false;
    }

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