Implemented Decoy Gambit

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

@@ -0,0 +1,113 @@
+package mage.cards.d;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.filter.predicate.permanent.ControllerIdPredicate;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.Target;
+import mage.target.TargetPermanent;
+import mage.target.targetadjustment.TargetAdjuster;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Objects;
+import java.util.UUID;
+import java.util.stream.Collectors;
+
+/**
+ * @author TheElk801
+ */
+public final class DecoyGambit extends CardImpl {
+
+    public DecoyGambit(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.INSTANT}, "{2}{U}");
+
+        // For each opponent, choose up to one target creature that player controls, then return that creature to its owner's hand unless its controller has you draw a card.
+        this.getSpellAbility().addEffect(new DecoyGambitEffect());
+        this.getSpellAbility().setTargetAdjuster(DecoyGambitAdjuster.instance);
+    }
+
+    private DecoyGambit(final DecoyGambit card) {
+        super(card);
+    }
+
+    @Override
+    public DecoyGambit copy() {
+        return new DecoyGambit(this);
+    }
+}
+
+enum DecoyGambitAdjuster implements TargetAdjuster {
+    instance;
+
+    @Override
+    public void adjustTargets(Ability ability, Game game) {
+        ability.getTargets().clear();
+        game.getOpponents(ability.getControllerId())
+                .stream()
+                .map(game::getPlayer)
+                .filter(Objects::nonNull)
+                .forEachOrdered(player -> {
+                    FilterPermanent filter = new FilterCreaturePermanent(
+                            "creature controlled by " + player.getName()
+                    );
+                    filter.add(new ControllerIdPredicate(player.getId()));
+                    ability.addTarget(new TargetPermanent(0, 1, filter, false));
+                });
+    }
+}
+
+class DecoyGambitEffect extends OneShotEffect {
+
+    DecoyGambitEffect() {
+        super(Outcome.Benefit);
+        staticText = "For each opponent, choose up to one target creature that player controls, " +
+                "then return that creature to its owner's hand unless its controller has you draw a card.";
+    }
+
+    private DecoyGambitEffect(final DecoyGambitEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public DecoyGambitEffect copy() {
+        return new DecoyGambitEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller == null) {
+            return false;
+        }
+        List<Permanent> permanents = source
+                .getTargets()
+                .stream()
+                .map(Target::getTargets)
+                .flatMap(Collection::stream)
+                .map(game::getPermanent)
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+        for (Permanent permanent : permanents) {
+            Player player = game.getPlayer(permanent.getControllerId());
+            if (player == null) {
+                continue;
+            }
+            if (player.chooseUse(outcome, "Have " + controller.getName() + " draw a card? If you don't, " +
+                    permanent.getName() + " will be returned to its owner's hand.", source, game)
+                    && controller.drawCards(1, source.getSourceId(), game) > 0) {
+                player.moveCards(permanent, Zone.HAND, source, game);
+            }
+        }
+        return true;
+    }
+}

Mage.Sets/src/mage/sets/Commander2020Edition.java

@@ -101,6 +101,7 @@ public final class Commander2020Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Deadly Tempest", 131, Rarity.RARE, mage.cards.d.DeadlyTempest.class));
         cards.add(new SetCardInfo("Dearly Departed", 84, Rarity.RARE, mage.cards.d.DearlyDeparted.class));
         cards.add(new SetCardInfo("Deathsprout", 208, Rarity.UNCOMMON, mage.cards.d.Deathsprout.class));
+        cards.add(new SetCardInfo("Decoy Gambit", 32, Rarity.RARE, mage.cards.d.DecoyGambit.class));
         cards.add(new SetCardInfo("Decree of Justice", 85, Rarity.RARE, mage.cards.d.DecreeOfJustice.class));
         cards.add(new SetCardInfo("Deflecting Swat", 50, Rarity.RARE, mage.cards.d.DeflectingSwat.class));
         cards.add(new SetCardInfo("Descend upon the Sinful", 86, Rarity.MYTHIC, mage.cards.d.DescendUponTheSinful.class));