foul-magics/Mage.Sets/src/mage/cards/o/ObsidianFireheart.java

package mage.cards.o;

import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.common.BeginningOfUpkeepTriggeredAbility;
import mage.abilities.common.SimpleActivatedAbility;
import mage.abilities.common.SimpleStaticAbility;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.abilities.effects.ContinuousEffect;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.DamageControllerEffect;
import mage.abilities.effects.common.continuous.GainAbilityTargetEffect;
import mage.abilities.effects.common.counter.AddCountersTargetEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.SubType;
import mage.constants.Duration;
import mage.constants.Outcome;
import mage.constants.TargetController;
import mage.constants.Zone;
import mage.counters.CounterType;
import mage.filter.common.FilterLandPermanent;
import mage.filter.predicate.Predicates;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.target.common.TargetLandPermanent;

/**
 *
 * @author LevelX2
 */
public final class ObsidianFireheart extends CardImpl {

    private static final String rule = "For as long as that land has a blaze counter "
            + "on it, it has \"At the beginning of your upkeep, this land deals 1 damage "
            + "to you.\" <i>(The land continues to burn after Obsidian Fireheart has left the battlefield.)</i>";
    private static final FilterLandPermanent filter = new FilterLandPermanent("land without a blaze counter on it");

    static {
        filter.add(Predicates.not(CounterType.BLAZE.getPredicate()));
    }

    public ObsidianFireheart(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{R}{R}{R}");
        this.subtype.add(SubType.ELEMENTAL);

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

        // {1}{R}{R}: Put a blaze counter on target land without a blaze counter on it.
        // For as long as that land has a blaze counter on it, it has "At the beginning
        // of your upkeep, this land deals 1 damage to you." (The land continues to burn
        // after Obsidian Fireheart has left the battlefield.)
        Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD,
                new AddCountersTargetEffect(CounterType.BLAZE.createInstance()),
                new ManaCostsImpl("{1}{R}{R}"));
        ability.addTarget(new TargetLandPermanent(filter));
        OneShotEffect effect = new ObsidianFireheartOneShotEffect();
        effect.setText(rule);
        ability.addEffect(effect);
        this.addAbility(ability);

    }

    private ObsidianFireheart(final ObsidianFireheart card) {
        super(card);
    }

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

class ObsidianFireheartOneShotEffect extends OneShotEffect {

    public ObsidianFireheartOneShotEffect() {
        super(Outcome.Detriment);
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        // If the owner/controller of this card leaves the game, the blaze counters 
        // presence on the targeted land will continue to deal 1 damage every upkeep
        // to the lands controller.
        Permanent targetLand = game.getPermanent(source.getFirstTarget());
        if (targetLand != null
                && source.getTargets().get(0) != null) {
            ContinuousEffect effect = new ObsidianFireheartGainAbilityEffect(
                    new BeginningOfUpkeepTriggeredAbility(
                            new DamageControllerEffect(1),
                            TargetController.YOU,
                            false),
                    Duration.Custom, "");

            // add a new independent ability that is not reliant on the source ability
            SimpleStaticAbility gainAbility = new SimpleStaticAbility(Zone.BATTLEFIELD, effect);

            // set sourcecard of the independent ability to the targeted permanent of the source ability
            gainAbility.setSourceId(targetLand.getId());

            // the target of the source ability is added to the new independent ability
            gainAbility.getTargets().add(source.getTargets().get(0));

            // add the continuous effect to the game with the independent ability
            game.addEffect(effect, gainAbility);

            return true;
        }
        return false;
    }
}

class ObsidianFireheartGainAbilityEffect extends GainAbilityTargetEffect {

    public ObsidianFireheartGainAbilityEffect(Ability ability, Duration duration, String rule) {
        super(ability, duration, rule);
    }

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

    @Override
    public boolean isInactive(Ability source, Game game) {
        Permanent targetLand = game.getPermanent(this.targetPointer.getFirst(game, source));
        if (targetLand != null 
                && targetLand.getCounters(game).getCount(CounterType.BLAZE) < 1) {
            return true;
        }
        return false;
    }

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