Implemented Pako, Arcane Retriever

Mage.Sets/src/mage/cards/p/PakoArcaneRetriever.java

@@ -0,0 +1,124 @@
+package mage.cards.p;
+
+import mage.MageInt;
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.common.AttacksTriggeredAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.keyword.HasteAbility;
+import mage.abilities.keyword.PartnerWithAbility;
+import mage.cards.*;
+import mage.constants.*;
+import mage.counters.CounterType;
+import mage.filter.StaticFilters;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.watchers.Watcher;
+
+import java.util.*;
+
+/**
+ * @author TheElk801
+ */
+public final class PakoArcaneRetriever extends CardImpl {
+
+    public PakoArcaneRetriever(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{R}{G}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.ELEMENTAL);
+        this.subtype.add(SubType.HOUND);
+        this.power = new MageInt(3);
+        this.toughness = new MageInt(3);
+
+        // Partner with Haldan, Avid Arcanist
+        this.addAbility(new PartnerWithAbility("Haldan, Avid Arcanist"));
+
+        // Haste
+        this.addAbility(HasteAbility.getInstance());
+
+        // Whenever Pako, Arcane Retriever attacks, exile the top card of each player's library and put a fetch counter on each of them. Put a +1/+1 counter on Pako for each noncreature card exiled this way.
+        this.addAbility(new AttacksTriggeredAbility(new PakoArcaneRetrieverEffect(), false));
+    }
+
+    private PakoArcaneRetriever(final PakoArcaneRetriever card) {
+        super(card);
+    }
+
+    @Override
+    public PakoArcaneRetriever copy() {
+        return new PakoArcaneRetriever(this);
+    }
+}
+
+class PakoArcaneRetrieverEffect extends OneShotEffect {
+
+    PakoArcaneRetrieverEffect() {
+        super(Outcome.Benefit);
+        staticText = "exile the top card of each player's library and put a fetch counter on each of them. " +
+                "Put a +1/+1 counter on {this} for each noncreature card exiled this way.";
+    }
+
+    private PakoArcaneRetrieverEffect(final PakoArcaneRetrieverEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public PakoArcaneRetrieverEffect copy() {
+        return new PakoArcaneRetrieverEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller == null) {
+            return false;
+        }
+        Cards cards = new CardsImpl();
+        game.getState()
+                .getPlayersInRange(controller.getId(), game)
+                .stream()
+                .map(game::getPlayer)
+                .map(Player::getLibrary)
+                .map(library -> library.getFromTop(game))
+                .forEach(cards::add);
+        controller.moveCards(cards, Zone.EXILED, source, game);
+        cards.removeIf(cardId -> game.getState().getZone(cardId) != Zone.EXILED);
+        int counters = cards.count(StaticFilters.FILTER_CARD_NON_CREATURE, game);
+        if (cards.isEmpty()) {
+            return true;
+        }
+        cards.getCards(game).stream().forEach(card -> card.addCounters(CounterType.FETCH.createInstance(), source, game));
+        Permanent permanent = game.getPermanent(source.getSourceId());
+        if (permanent == null || counters == 0) {
+            return true;
+        }
+        return permanent.addCounters(CounterType.P1P1.createInstance(counters), source, game);
+    }
+}
+
+class PakoArcaneRetrieverWatcher extends Watcher {
+
+    private final Map<UUID, Set<MageObjectReference>> playerMap = new HashMap();
+
+    PakoArcaneRetrieverWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+    }
+
+    public void addCard(UUID playerId, Card card, Game game) {
+        playerMap.computeIfAbsent(playerId, u -> new HashSet()).add(new MageObjectReference(card, game));
+    }
+
+    public boolean checkCard(UUID playerId, Card card, Game game) {
+        return playerMap
+                .computeIfAbsent(playerId, u -> new HashSet())
+                .stream()
+                .anyMatch(mageObjectReference -> mageObjectReference.refersTo(card, game));
+    }
+}

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

@@ -234,6 +234,7 @@ public final class Commander2020Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Otrimi, the Ever-Playful", 12, Rarity.MYTHIC, mage.cards.o.OtrimiTheEverPlayful.class));
         cards.add(new SetCardInfo("Outpost Siege", 157, Rarity.RARE, mage.cards.o.OutpostSiege.class));
         cards.add(new SetCardInfo("Painful Truths", 134, Rarity.RARE, mage.cards.p.PainfulTruths.class));
+        cards.add(new SetCardInfo("Pako, Arcane Retriever", 13, Rarity.MYTHIC, mage.cards.p.PakoArcaneRetriever.class));
         cards.add(new SetCardInfo("Parasitic Impetus", 46, Rarity.UNCOMMON, mage.cards.p.ParasiticImpetus.class));
         cards.add(new SetCardInfo("Path of Ancestry", 298, Rarity.COMMON, mage.cards.p.PathOfAncestry.class));
         cards.add(new SetCardInfo("Portal Mage", 122, Rarity.RARE, mage.cards.p.PortalMage.class));

Mage/src/main/java/mage/counters/CounterType.java

@@ -49,6 +49,7 @@ public enum CounterType {
     FADE("fade"),
     FATE("fate"),
     FEATHER("feather"),
+    FETCH("fetch"),
     FILIBUSTER("filibuster"),
     FIRST_STRIKE("first strike"),
     FLOOD("flood"),