foul-magics/Mage.Sets/src/mage/sets/magic2015/MightMakesRight.java

/*
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package mage.sets.magic2015;

import java.util.List;
import java.util.UUID;
import mage.abilities.Ability;
import mage.abilities.TriggeredAbility;
import mage.abilities.common.BeginningOfCombatTriggeredAbility;
import mage.abilities.condition.Condition;
import mage.abilities.decorator.ConditionalTriggeredAbility;
import mage.abilities.effects.common.UntapTargetEffect;
import mage.abilities.effects.common.continuous.GainAbilityTargetEffect;
import mage.abilities.effects.common.continuous.GainControlTargetEffect;
import mage.abilities.keyword.HasteAbility;
import mage.cards.CardImpl;
import mage.constants.CardType;
import mage.constants.Duration;
import mage.constants.Rarity;
import mage.constants.TargetController;
import mage.filter.common.FilterCreaturePermanent;
import mage.filter.predicate.permanent.ControllerPredicate;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.target.common.TargetCreaturePermanent;

/**
 *
 * @author Quercitron
 */
public class MightMakesRight extends CardImpl {

    private static final String ruleText = "At the beginning of combat on your turn, if you control each creature on the battlefield with the greatest power, "
            + "gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.";
    
    private static final FilterCreaturePermanent filter = new FilterCreaturePermanent("creature an opponent controls");
    
    static {
        filter.add(new ControllerPredicate(TargetController.OPPONENT));
    }
    
    public MightMakesRight(UUID ownerId) {
        super(ownerId, 156, "Might Makes Right", Rarity.UNCOMMON, new CardType[]{CardType.ENCHANTMENT}, "{5}{R}");
        this.expansionSetCode = "M15";

        this.color.setRed(true);

        // At the beginning of combat on your turn, if you control each creature on the battlefield with the greatest power, gain control
        // of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.
        TriggeredAbility gainControlAbility = new BeginningOfCombatTriggeredAbility(new GainControlTargetEffect(Duration.EndOfTurn), TargetController.YOU, false);
        gainControlAbility.addEffect(new UntapTargetEffect());
        gainControlAbility.addEffect(new GainAbilityTargetEffect(HasteAbility.getInstance(), Duration.EndOfTurn));
        gainControlAbility.addTarget(new TargetCreaturePermanent(filter));
        Ability conditionalAbility = new ConditionalTriggeredAbility(gainControlAbility, ControlsEachCreatureWithGreatestPowerCondition.getInstance(), ruleText);
        this.addAbility(conditionalAbility);
    }

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

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

class ControlsEachCreatureWithGreatestPowerCondition implements Condition {

    private static final ControlsEachCreatureWithGreatestPowerCondition fInstance = new ControlsEachCreatureWithGreatestPowerCondition();
    
    private static final FilterCreaturePermanent filter = new FilterCreaturePermanent();

    public static Condition getInstance() {
        return fInstance;
    }
    
    @Override
    public boolean apply(Game game, Ability source) {
        Integer maxPower = null;
        boolean result = false;
        List<Permanent> permanents = game.getBattlefield().getActivePermanents(filter, source.getControllerId(), source.getSourceId(), game);
        for (Permanent permanent : permanents) {
            if (permanent == null) {
                continue;
            }
            int power = permanent.getPower().getValue();
            if (maxPower == null || power > maxPower) {
                maxPower = permanent.getPower().getValue();
                result = true;
            }
            if (power == maxPower) {
                result &= permanent.getControllerId().equals(source.getControllerId());
            }
        }
        return result;
    }
    
}