Exhume.java example

Explorer
mage-master
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package mage.cards.e;

import mage.abilities.Ability;
import mage.abilities.effects.OneShotEffect;
import mage.cards.Card;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.filter.common.FilterCreatureCard;
import mage.filter.predicate.other.OwnerIdPredicate;
import mage.game.Game;
import mage.players.Player;
import mage.target.common.TargetCardInGraveyard;

import java.util.UUID;

/**
 *
 * @author Plopman
 */
public class Exhume extends CardImpl {

    public Exhume(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.SORCERY},"{1}{B}");

        // Each player puts a creature card from his or her graveyard onto the battlefield.
        this.getSpellAbility().addEffect(new ExhumeEffect());
    }

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

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

class ExhumeEffect extends OneShotEffect {

    public ExhumeEffect() {
        super(Outcome.PutCreatureInPlay);
        this.staticText = "Each player puts a creature card from his or her graveyard onto the battlefield";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        if (controller == null) {
            return false;
        }

        for (UUID playerId : game.getState().getPlayersInRange(controller.getId(), game)) {
            Player player = game.getPlayer(playerId);
            if (player != null) {
                FilterCreatureCard filterCreatureCard = new FilterCreatureCard("creature card from your graveyard");
                filterCreatureCard.add(new OwnerIdPredicate(playerId));
                TargetCardInGraveyard target = new TargetCardInGraveyard(filterCreatureCard);
                if (target.canChoose(playerId, game)
                        && player.chooseTarget(outcome, target, source, game)) {
                    Card card = game.getCard(target.getFirstTarget());
                    if (card != null) {
                        player.moveCards(card, Zone.BATTLEFIELD, source, game);
                    }
                }
            }
        }
        return true;
    }
}