[WOC] Implement Knickknack Ouphe (#11070)

Mage.Sets/src/mage/cards/k/KnickknackOuphe.java

@@ -0,0 +1,122 @@
+package mage.cards.k;
+
+import java.util.UUID;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldAbility;
+import mage.abilities.dynamicvalue.common.ManacostVariableValue;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.EntersBattlefieldWithXCountersEffect;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.cards.Cards;
+import mage.cards.CardsImpl;
+import mage.constants.CardType;
+import mage.constants.ComparisonType;
+import mage.constants.Outcome;
+import mage.constants.PutCards;
+import mage.constants.SubType;
+import mage.constants.Zone;
+import mage.counters.CounterType;
+import mage.filter.FilterCard;
+import mage.filter.common.FilterEnchantmentCard;
+import mage.filter.predicate.mageobject.ManaValuePredicate;
+import mage.game.Game;
+import mage.players.Player;
+import mage.target.TargetCard;
+
+/**
+ *
+ * @author Xanderhall
+ */
+public final class KnickknackOuphe extends CardImpl {
+
+    public KnickknackOuphe(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{X}{G}");
+        
+        this.subtype.add(SubType.OUPHE);
+        this.power = new MageInt(1);
+        this.toughness = new MageInt(1);
+
+        // Knickknack Ouphe enters the battlefield with X +1/+1 counters on it.
+        this.addAbility(new EntersBattlefieldAbility(new EntersBattlefieldWithXCountersEffect(CounterType.P1P1.createInstance())));
+
+        // When Knickknack Ouphe enters the battlefield, reveal the top X cards of your library. You may put any number of Aura cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order.
+        this.addAbility(new EntersBattlefieldAbility(new KnickknackOuphePutOntoBattlefieldEffect()));
+
+    }
+
+    private KnickknackOuphe(final KnickknackOuphe card) {
+        super(card);
+    }
+
+    @Override
+    public KnickknackOuphe copy() {
+        return new KnickknackOuphe(this);
+    }
+}
+
+class KnickknackOuphePutOntoBattlefieldEffect extends OneShotEffect {
+
+    public KnickknackOuphePutOntoBattlefieldEffect() {
+        super(Outcome.PutCardInPlay);
+        staticText = "reveal the top X cards of your library. " + 
+        "You may put any number of Aura cards with mana value X or less from among them onto the battlefield. " + 
+        "Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order";
+    }
+
+    public KnickknackOuphePutOntoBattlefieldEffect(final KnickknackOuphePutOntoBattlefieldEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller != null) {
+            int count = ManacostVariableValue.ETB.calculate(game, source, null);
+            if (count > 0) {
+                Cards cards = new CardsImpl(controller.getLibrary().getTopCards(game, count));
+                controller.revealCards(source, cards, game);
+
+                FilterCard filter = new FilterEnchantmentCard("Aura cards with mana value " + count + " or less to put onto the battlefield");
+                filter.add(SubType.AURA.getPredicate());
+                filter.add(new ManaValuePredicate(ComparisonType.OR_LESS, count));
+                
+                if (cards.count(filter, controller.getId(), source, game) > 0) {
+                    TargetCard targetAuras = new TargetCard(0, count, Zone.LIBRARY, filter);
+                    targetAuras.setRequired(false);
+
+                    if (controller.choose(Outcome.PutCardInPlay, cards, targetAuras, source, game)) {
+                        targetAuras.getTargets().stream().forEach(t -> {
+                            Card card = cards.get(t, game);
+                            if (card != null) {
+                                cards.remove(card);
+                                controller.moveCards(card, Zone.BATTLEFIELD, source, game);
+                            }
+                        });
+
+                        targetAuras.clearChosen();
+                    } else {
+                        game.informPlayers(controller.getLogName() + " didn't choose anything");
+                    }
+                } else {
+                    game.informPlayers("No Aura cards with mana value " + count + " or less to choose.");
+                }
+
+                if (!cards.isEmpty()) {
+                    PutCards.BOTTOM_RANDOM.moveCards(controller, cards, source, game);
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public KnickknackOuphePutOntoBattlefieldEffect copy() {
+        return new KnickknackOuphePutOntoBattlefieldEffect(this);
+    }
+
+}

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

@@ -77,6 +77,7 @@ public final class WildsOfEldraineCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Keep Watch", 98, Rarity.COMMON, mage.cards.k.KeepWatch.class));
         cards.add(new SetCardInfo("Kenrith's Transformation", 128, Rarity.UNCOMMON, mage.cards.k.KenrithsTransformation.class));
         cards.add(new SetCardInfo("Kindred Dominance", 113, Rarity.RARE, mage.cards.k.KindredDominance.class));
+        cards.add(new SetCardInfo("Knickknack Ouphe", 18, Rarity.RARE, mage.cards.k.KnickknackOuphe.class));
         cards.add(new SetCardInfo("Kor Spiritdancer", 69, Rarity.RARE, mage.cards.k.KorSpiritdancer.class));
         cards.add(new SetCardInfo("Krosan Verge", 163, Rarity.UNCOMMON, mage.cards.k.KrosanVerge.class));
         cards.add(new SetCardInfo("Loamcrafter Faun", 19, Rarity.RARE, mage.cards.l.LoamcrafterFaun.class));