Implemented Death's Oasis

Mage.Sets/src/mage/cards/d/DeathsOasis.java

@@ -0,0 +1,170 @@
+package mage.cards.d;
+
+import mage.abilities.Ability;
+import mage.abilities.common.DiesCreatureTriggeredAbility;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.SacrificeSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.GainLifeEffect;
+import mage.abilities.effects.common.PutTopCardOfLibraryIntoGraveControllerEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.ComparisonType;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.filter.FilterCard;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterControlledCreaturePermanent;
+import mage.filter.common.FilterCreatureCard;
+import mage.filter.predicate.Predicates;
+import mage.filter.predicate.mageobject.ConvertedManaCostPredicate;
+import mage.filter.predicate.permanent.TokenPredicate;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetCard;
+import mage.target.common.TargetCardInYourGraveyard;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class DeathsOasis extends CardImpl {
+
+    public DeathsOasis(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{W}{B}{G}");
+
+        // Whenever a nontoken creature you control dies, put the top two cards of your library into your graveyard. Then return a creature card with lesser converted mana cost than the creature that died from the graveyard to your hand.
+        this.addAbility(new DeathsOasisTriggeredAbility());
+
+        // {1}, Sacrifice Death's Oasis: You gain life equal to the greatest converted mana cost among creatures you control.
+        Ability ability = new SimpleActivatedAbility(
+                new GainLifeEffect(DeathsOasisValue.instance)
+                        .setText("you gain life equal to the greatest converted mana cost among creatures you control"),
+                new GenericManaCost(1)
+        );
+        ability.addCost(new SacrificeSourceCost());
+        this.addAbility(ability);
+    }
+
+    private DeathsOasis(final DeathsOasis card) {
+        super(card);
+    }
+
+    @Override
+    public DeathsOasis copy() {
+        return new DeathsOasis(this);
+    }
+}
+
+class DeathsOasisTriggeredAbility extends DiesCreatureTriggeredAbility {
+
+    private static final FilterPermanent defaultFilter = new FilterControlledCreaturePermanent();
+
+    static {
+        defaultFilter.add(Predicates.not(TokenPredicate.instance));
+    }
+
+    DeathsOasisTriggeredAbility() {
+        super(Zone.BATTLEFIELD, null, false, defaultFilter, false);
+    }
+
+    private DeathsOasisTriggeredAbility(final DeathsOasisTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public DeathsOasisTriggeredAbility copy() {
+        return new DeathsOasisTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (!super.checkTrigger(event, game)) {
+            return false;
+        }
+        ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
+        if (zEvent.getTarget() == null) {
+            return false;
+        }
+        this.getEffects().clear();
+        this.addEffect(new PutTopCardOfLibraryIntoGraveControllerEffect(2));
+        this.addEffect(new DeathsOasisEffect(zEvent.getTarget().getConvertedManaCost()));
+        return true;
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever a nontoken creature you control dies, put the top two cards of your library " +
+                "into your graveyard. Then return a creature card with lesser converted mana cost " +
+                "than the creature that died from your graveyard to your hand.";
+    }
+}
+
+class DeathsOasisEffect extends OneShotEffect {
+
+    private final FilterCard filter;
+
+    DeathsOasisEffect(int cmc) {
+        super(Outcome.Benefit);
+        this.filter = new FilterCreatureCard("creature card in your graveyard with converted mana cost " + (cmc - 1) + " or less");
+        this.filter.add(new ConvertedManaCostPredicate(ComparisonType.FEWER_THAN, cmc));
+    }
+
+    private DeathsOasisEffect(final DeathsOasisEffect effect) {
+        super(effect);
+        this.filter = effect.filter.copy();
+    }
+
+    @Override
+    public DeathsOasisEffect copy() {
+        return new DeathsOasisEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null || player.getGraveyard().count(filter, game) == 0) {
+            return false;
+        }
+        TargetCard target = new TargetCardInYourGraveyard(filter);
+        target.setNotTarget(true);
+        if (!player.choose(outcome, player.getGraveyard(), target, game)) {
+            return false;
+        }
+        return player.moveCards(game.getCard(target.getFirstTarget()), Zone.HAND, source, game);
+    }
+}
+
+enum DeathsOasisValue implements DynamicValue {
+    instance;
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        return game
+                .getBattlefield()
+                .getAllActivePermanents(sourceAbility.getControllerId())
+                .stream()
+                .filter(Permanent::isCreature)
+                .mapToInt(Permanent::getConvertedManaCost)
+                .max()
+                .orElse(0);
+    }
+
+    @Override
+    public DynamicValue copy() {
+        return this;
+    }
+
+    @Override
+    public String getMessage() {
+        return "1";
+    }
+}

Mage.Sets/src/mage/sets/IkoriaLairOfBehemoths.java

@@ -74,6 +74,7 @@ public final class IkoriaLairOfBehemoths extends ExpansionSet {
         cards.add(new SetCardInfo("Colossification", 148, Rarity.RARE, mage.cards.c.Colossification.class));
         cards.add(new SetCardInfo("Crystalline Giant", 234, Rarity.RARE, mage.cards.c.CrystallineGiant.class));
         cards.add(new SetCardInfo("Cubwarden", 7, Rarity.RARE, mage.cards.c.Cubwarden.class));
+        cards.add(new SetCardInfo("Death's Oasis", 182, Rarity.RARE, mage.cards.d.DeathsOasis.class));
         cards.add(new SetCardInfo("Dire Tactics", 183, Rarity.UNCOMMON, mage.cards.d.DireTactics.class));
         cards.add(new SetCardInfo("Dirge Bat", 84, Rarity.RARE, mage.cards.d.DirgeBat.class));
         cards.add(new SetCardInfo("Drannith Magistrate", 11, Rarity.RARE, mage.cards.d.DrannithMagistrate.class));