Implement Nesting Grounds (#6433)

Mage.Sets/src/mage/cards/n/NestingGrounds.java

@@ -0,0 +1,106 @@
+package mage.cards.n;
+
+import mage.abilities.Ability;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.mana.ColorlessManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.choices.Choice;
+import mage.choices.ChoiceImpl;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.counters.Counter;
+import mage.counters.CounterType;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterControlledPermanent;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetPermanent;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ *
+ * @author anonymous
+ */
+public final class NestingGrounds extends CardImpl {
+
+    public NestingGrounds(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.LAND}, "");
+        
+
+        // {T}: Add {C}.
+        this.addAbility(new ColorlessManaAbility());
+
+        // {1}, {T}: Move a counter from target permanent you control onto another target permanent. Activate this ability only any time you could cast a sorcery.
+        Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new NestingGroundsEffect(), new GenericManaCost(1));
+        ability.addCost(new TapSourceCost());
+        ability.addTarget(new TargetPermanent(new FilterControlledPermanent("permanent to remove counter from")));
+        ability.addTarget(new TargetPermanent(new FilterPermanent("permanent to put counter on")));
+        this.addAbility(ability);
+    }
+
+    private NestingGrounds(final NestingGrounds card) {
+        super(card);
+    }
+
+    @Override
+    public NestingGrounds copy() {
+        return new NestingGrounds(this);
+    }
+}
+
+class NestingGroundsEffect extends OneShotEffect {
+
+    public NestingGroundsEffect() {
+        super(Outcome.AIDontUseIt);
+        this.staticText = "Move a counter from target permanent you control onto another target permanent";
+    }
+
+    public NestingGroundsEffect(final mage.cards.n.NestingGroundsEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public mage.cards.n.NestingGroundsEffect copy() {
+        return new mage.cards.n.NestingGroundsEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        Permanent fromPermanent = game.getPermanent(source.getFirstTarget());
+        Permanent toPermanent = game.getPermanent(source.getTargets().get(1).getFirstTarget());
+        if (fromPermanent == null
+                || toPermanent == null
+                || controller == null) {
+            return false;
+        }
+        Choice choice = new ChoiceImpl();
+        Set<String> possibleChoices = new HashSet<>();
+        for (String counterName : fromPermanent.getCounters(game).keySet()) {
+            possibleChoices.add(counterName);
+        }
+        choice.setChoices(possibleChoices);
+        if (controller.choose(outcome, choice, game)) {
+            String chosen = choice.getChoice();
+            if (fromPermanent.getCounters(game).containsKey(chosen)) {
+                CounterType counterType = CounterType.findByName(chosen);
+                if (counterType != null) {
+                    Counter counter = counterType.createInstance();
+                    fromPermanent.removeCounters(counter, game);
+                    toPermanent.addCounters(counter, source, game);
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+}

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

@@ -204,6 +204,7 @@ public final class Commander2020Edition extends ExpansionSet {
         cards.add(new SetCardInfo("Mystic Monastery", 293, Rarity.UNCOMMON, mage.cards.m.MysticMonastery.class));
         cards.add(new SetCardInfo("Nahiri, the Harbinger", 223, Rarity.MYTHIC, mage.cards.n.NahiriTheHarbinger.class));
         cards.add(new SetCardInfo("Natural Connection", 184, Rarity.COMMON, mage.cards.n.NaturalConnection.class));
+        cards.add(new SetCardInfo("Nesting Grounds", 71, Rarity.RARE, mage.cards.n.NestingGrounds.class));
         cards.add(new SetCardInfo("Netherborn Altar", 45, Rarity.RARE, mage.cards.n.NetherbornAltar.class));
         cards.add(new SetCardInfo("New Perspectives", 119, Rarity.RARE, mage.cards.n.NewPerspectives.class));
         cards.add(new SetCardInfo("Niblis of Frost", 120, Rarity.RARE, mage.cards.n.NiblisOfFrost.class));