[ZNR] Implemented Confounding Conundrum

Mage.Sets/src/mage/cards/c/ConfoundingConundrum.java

@@ -0,0 +1,144 @@
+package mage.cards.c;
+
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldAllTriggeredAbility;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.decorator.ConditionalInterveningIfTriggeredAbility;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterPermanent;
+import mage.filter.StaticFilters;
+import mage.filter.common.FilterLandPermanent;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPermanent;
+import mage.watchers.Watcher;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class ConfoundingConundrum extends CardImpl {
+
+    private static final FilterPermanent filter = new FilterLandPermanent();
+
+    static {
+        filter.add(TargetController.OPPONENT.getControllerPredicate());
+    }
+
+    public ConfoundingConundrum(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{1}{U}");
+
+        // When Confounding Conundrum enters the battlefield, draw a card.
+        this.addAbility(new EntersBattlefieldTriggeredAbility(new DrawCardSourceControllerEffect(1)));
+
+        // Whenever a land enters the battlefield under an opponent's control, if that player had another land enter the battlefield under their control this turn, they return a land they control to its owner's hand.
+        this.addAbility(new ConditionalInterveningIfTriggeredAbility(new EntersBattlefieldAllTriggeredAbility(
+                Zone.BATTLEFIELD, new ConfoundingConundrumEffect(), filter,
+                false, SetTargetPointer.PLAYER, ""
+        ), ConfoundingConundrumCondition.instance, "Whenever a land enters the battlefield under " +
+                "an opponent's control, if that player had another land enter the battlefield " +
+                "under their control this turn, they return a land they control to its owner's hand."
+        ), new ConfoundingConundrumWatcher());
+    }
+
+    private ConfoundingConundrum(final ConfoundingConundrum card) {
+        super(card);
+    }
+
+    @Override
+    public ConfoundingConundrum copy() {
+        return new ConfoundingConundrum(this);
+    }
+}
+
+enum ConfoundingConundrumCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        ConfoundingConundrumWatcher watcher = game.getState().getWatcher(ConfoundingConundrumWatcher.class);
+        if (watcher == null) {
+            return false;
+        }
+        Player player = null;
+        for (Effect effect : source.getEffects()) {
+            if (player != null) {
+                break;
+            }
+            player = game.getPlayer(effect.getTargetPointer().getFirst(game, source));
+        }
+        return player != null && watcher.checkPlayer(player.getId());
+    }
+}
+
+class ConfoundingConundrumEffect extends OneShotEffect {
+
+    ConfoundingConundrumEffect() {
+        super(Outcome.Benefit);
+    }
+
+    private ConfoundingConundrumEffect(final ConfoundingConundrumEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public ConfoundingConundrumEffect copy() {
+        return new ConfoundingConundrumEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(targetPointer.getFirst(game, source));
+        if (player == null) {
+            return false;
+        }
+        TargetPermanent target = new TargetPermanent(1, StaticFilters.FILTER_CONTROLLED_PERMANENT_LAND);
+        target.setNotTarget(true);
+        if (!target.canChoose(source.getSourceId(), player.getId(), game)) {
+            return false;
+        }
+        player.choose(outcome, target, source.getSourceId(), game);
+        return player.moveCards(game.getCard(target.getFirstTarget()), Zone.HAND, source, game);
+    }
+}
+
+class ConfoundingConundrumWatcher extends Watcher {
+
+    private final Map<UUID, Integer> playerMap = new HashMap<>();
+
+    ConfoundingConundrumWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.ENTERS_THE_BATTLEFIELD) {
+            return;
+        }
+        Permanent permanent = game.getPermanent(event.getTargetId());
+        if (permanent != null && permanent.isLand()) {
+            playerMap.compute(permanent.getControllerId(), (u, i) -> i == null ? 1 : Integer.sum(i, 1));
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        playerMap.clear();
+    }
+
+    boolean checkPlayer(UUID playerId) {
+        return playerMap.getOrDefault(playerId, 0) > 1;
+    }
+}

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

@@ -149,6 +149,7 @@ public final class ZendikarRising extends ExpansionSet {
         cards.add(new SetCardInfo("Cliffhaven Kitesail", 243, Rarity.COMMON, mage.cards.c.CliffhavenKitesail.class));
         cards.add(new SetCardInfo("Cliffhaven Sell-Sword", 8, Rarity.COMMON, mage.cards.c.CliffhavenSellSword.class));
         cards.add(new SetCardInfo("Concerted Defense", 52, Rarity.UNCOMMON, mage.cards.c.ConcertedDefense.class));
+        cards.add(new SetCardInfo("Confounding Conundrum", 53, Rarity.RARE, mage.cards.c.ConfoundingConundrum.class));
         cards.add(new SetCardInfo("Coralhelm Chronicler", 54, Rarity.RARE, mage.cards.c.CoralhelmChronicler.class));
         cards.add(new SetCardInfo("Coveted Prize", 95, Rarity.RARE, mage.cards.c.CovetedPrize.class));
         cards.add(new SetCardInfo("Cragcrown Pathway", 261, Rarity.RARE, mage.cards.c.CragcrownPathway.class));