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

import java.util.HashSet;
import java.util.Set;
import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.common.EntersBattlefieldTriggeredAbility;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.keyword.FlyingAbility;
import mage.cards.Card;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.cards.Cards;
import mage.cards.CardsImpl;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.filter.FilterCard;
import mage.filter.common.FilterInstantOrSorceryCard;
import mage.game.Game;
import mage.players.Player;
import mage.target.TargetCard;
import mage.target.common.TargetOpponent;

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

    public JacesMindseeker(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{U}{U}");
        this.subtype.add("Fish");
        this.subtype.add("Illusion");

        this.power = new MageInt(4);
        this.toughness = new MageInt(4);

        // Flying
        this.addAbility(FlyingAbility.getInstance());
        // When Jace's Mindseeker enters the battlefield, target opponent puts the top five cards of his or her library into his or her graveyard.
        // You may cast an instant or sorcery card from among them without paying its mana cost.
        Ability ability = new EntersBattlefieldTriggeredAbility(new JaceMindseekerEffect());
        ability.addTarget(new TargetOpponent());
        this.addAbility(ability);
    }

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

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

class JaceMindseekerEffect extends OneShotEffect {

    private static final FilterCard filter = new FilterInstantOrSorceryCard();

    public JaceMindseekerEffect() {
        super(Outcome.PlayForFree);
        this.staticText = "target opponent puts the top five cards of his or her library into his or her graveyard. You may cast an instant or sorcery card from among them without paying its mana cost";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Cards cardsToCast = new CardsImpl();
        Player targetOpponent = game.getPlayer(targetPointer.getFirst(game, source));
        if (targetOpponent != null) {
            Set<Card> allCards = targetOpponent.getLibrary().getTopCards(game, 5);
            Set<Card> toMove = new HashSet<>();
            toMove.addAll(allCards);
            targetOpponent.moveCards(toMove, Zone.GRAVEYARD, source, game);
            for (Card card : allCards) {
                if (filter.match(card, game)) {
                    Zone zone = game.getState().getZone(card.getId());
                    // If the five cards are put into a public zone such as exile instead of a graveyard (perhaps due to the ability of Rest in Peace),
                    // you can cast one of those instant or sorcery cards from that zone.
                    if (zone == Zone.GRAVEYARD || zone == Zone.EXILED) {
                        cardsToCast.add(card);
                    }
                }
            }

            // cast an instant or sorcery for free
            if (!cardsToCast.isEmpty()) {
                Player controller = game.getPlayer(source.getControllerId());
                if (controller != null) {
                    TargetCard target = new TargetCard(Zone.GRAVEYARD, filter); // zone should be ignored here
                    target.setNotTarget(true);
                    if (controller.chooseUse(outcome, "Cast an instant or sorcery card from among them for free?", source, game)
                            && controller.choose(outcome, cardsToCast, target, game)) {
                        Card card = cardsToCast.get(target.getFirstTarget(), game);
                        if (card != null) {
                            controller.cast(card.getSpellAbility(), game, true);
                        }
                    }
                }

            }
            return true;
        }
        return false;
    }
}