foul-magics/Mage.Sets/src/mage/cards/d/DefiantVanguard.java

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package mage.cards.d;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.common.BlocksTriggeredAbility;
import mage.abilities.common.SimpleActivatedAbility;
import mage.abilities.common.delayed.AtTheEndOfCombatDelayedTriggeredAbility;
import mage.abilities.costs.common.TapSourceCost;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.CreateDelayedTriggeredAbilityEffect;
import mage.abilities.effects.common.search.SearchLibraryPutInPlayEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.ComparisonType;
import mage.constants.Outcome;
import mage.constants.SubType;
import mage.constants.Zone;
import mage.filter.StaticFilters;
import mage.filter.common.FilterPermanentCard;
import mage.filter.predicate.mageobject.ConvertedManaCostPredicate;
import mage.filter.predicate.mageobject.SubtypePredicate;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.common.TargetCardInLibrary;
import mage.watchers.common.BlockedAttackerWatcher;

/**
 *
 * @author TheElk801
 */
public class DefiantVanguard extends CardImpl {

    private static final FilterPermanentCard filter = new FilterPermanentCard("Rebel permanent card with converted mana cost 4 or less");

    static {
        filter.add(new SubtypePredicate(SubType.REBEL));
        filter.add(new ConvertedManaCostPredicate(ComparisonType.FEWER_THAN, 5));
    }

    public DefiantVanguard(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{2}{W}");

        this.subtype.add("Human");
        this.subtype.add("Rebel");
        this.power = new MageInt(2);
        this.toughness = new MageInt(2);

        // When Defiant Vanguard blocks, at end of combat, destroy it and all creatures it blocked this turn.
        this.addAbility(
                new BlocksTriggeredAbility(new CreateDelayedTriggeredAbilityEffect(new AtTheEndOfCombatDelayedTriggeredAbility(new DefiantVanguardEffect())), false),
                new BlockedAttackerWatcher()
        );

        // {5}, {tap}: Search your library for a Rebel permanent card with converted mana cost 4 or less and put it onto the battlefield. Then shuffle your library.
        SimpleActivatedAbility ability = new SimpleActivatedAbility(Zone.BATTLEFIELD,
                new SearchLibraryPutInPlayEffect(new TargetCardInLibrary(filter), false),
                new ManaCostsImpl("{5}"));
        ability.addCost(new TapSourceCost());
        this.addAbility(ability);
    }

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

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

class DefiantVanguardEffect extends OneShotEffect {

    public DefiantVanguardEffect() {
        super(Outcome.DestroyPermanent);
        this.staticText = "destroy it and all creatures it blocked this turn";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        Permanent thisCreature = game.getPermanentOrLKIBattlefield(source.getId());
        if (controller != null && thisCreature != null) {
            BlockedAttackerWatcher watcher = (BlockedAttackerWatcher) game.getState().getWatchers().get(BlockedAttackerWatcher.class.getSimpleName());
            if (watcher != null) {
                List<Permanent> toDestroy = new ArrayList<>();
                for (Permanent creature : game.getBattlefield().getActivePermanents(StaticFilters.FILTER_PERMANENT_CREATURE, source.getControllerId(), source.getSourceId(), game)) {
                    if (!creature.getId().equals(thisCreature.getId())) {
                        if (watcher.creatureHasBlockedAttacker(creature, thisCreature, game)) {
                            toDestroy.add(creature);
                        }
                    }
                }
                for (Permanent creature : toDestroy) {
                    creature.destroy(source.getSourceId(), game, false);
                }
                thisCreature.destroy(source.getSourceId(), game, false);
                return true;
            }
        }
        return false;
    }
}