[MOC] Implement Flockchaser Phantom with adapted code from #10061

Mage.Sets/src/mage/cards/f/FlockchaserPhantom.java

@@ -0,0 +1,145 @@
+package mage.cards.f;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.AttacksTriggeredAbility;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.keyword.ConvokeAbility;
+import mage.abilities.keyword.FlyingAbility;
+import mage.abilities.keyword.VigilanceAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.stack.Spell;
+import mage.game.stack.StackObject;
+import mage.players.Player;
+import mage.util.CardUtil;
+import mage.watchers.Watcher;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+/**
+ * @author PurpleCrowbar
+ */
+public final class FlockchaserPhantom extends CardImpl {
+
+    public FlockchaserPhantom(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{4}{W}{U}");
+        this.subtype.add(SubType.SPIRIT);
+        this.power = new MageInt(5);
+        this.toughness = new MageInt(5);
+
+        // Convoke
+        this.addAbility(new ConvokeAbility());
+
+        // Flying
+        this.addAbility(FlyingAbility.getInstance());
+
+        // Vigilance
+        this.addAbility(VigilanceAbility.getInstance());
+
+        // Whenever Flockchaser Phantom attacks, the next spell you cast this turn has convoke.
+        this.addAbility(new AttacksTriggeredAbility(new FlockchaserPhantomEffect()), new FlockchaserPhantomWatcher());
+    }
+
+    private FlockchaserPhantom(final FlockchaserPhantom card) {
+        super(card);
+    }
+
+    @Override
+    public FlockchaserPhantom copy() {
+        return new FlockchaserPhantom(this);
+    }
+}
+
+class FlockchaserPhantomEffect extends ContinuousEffectImpl {
+
+    private int spellsCast;
+    private final Ability convokeAbility = new ConvokeAbility();
+
+    FlockchaserPhantomEffect() {
+        super(Duration.EndOfTurn, Layer.AbilityAddingRemovingEffects_6, SubLayer.NA, Outcome.AddAbility);
+        staticText = "the next spell you cast this turn has convoke";
+    }
+
+    private FlockchaserPhantomEffect(final FlockchaserPhantomEffect effect) {
+        super(effect);
+        this.spellsCast = effect.spellsCast;
+    }
+
+    @Override
+    public void init(Ability source, Game game) {
+        super.init(source, game);
+        FlockchaserPhantomWatcher watcher = game.getState().getWatcher(FlockchaserPhantomWatcher.class);
+        if (watcher != null) {
+            spellsCast = watcher.getCount(source.getControllerId());
+        }
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        FlockchaserPhantomWatcher watcher = game.getState().getWatcher(FlockchaserPhantomWatcher.class);
+        if (watcher == null) {
+            return false;
+        }
+
+        //check if a spell was cast before
+        if (watcher.getCount(source.getControllerId()) > spellsCast) {
+            discard(); // only one use
+            return false;
+        }
+
+        //check cast for spell and add convoke
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller != null) {
+            for (StackObject stackObject : game.getStack()) {
+                if ((stackObject instanceof Spell) && !stackObject.isCopy() && stackObject.isControlledBy(source.getControllerId())) {
+                    Spell spell = (Spell) stackObject;
+                    game.getState().addOtherAbility(spell.getCard(), convokeAbility);
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    @Override
+    public FlockchaserPhantomEffect copy() {
+        return new FlockchaserPhantomEffect(this);
+    }
+}
+
+class FlockchaserPhantomWatcher extends Watcher {
+
+    private final Map<UUID, Integer> playerMap = new HashMap<>();
+
+    FlockchaserPhantomWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() != GameEvent.EventType.SPELL_CAST) {
+            return;
+        }
+        Spell spell = game.getSpell(event.getSourceId());
+        if (spell != null) {
+            playerMap.compute(event.getPlayerId(), CardUtil::setOrIncrementValue);
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        playerMap.clear();
+    }
+
+    int getCount(UUID playerId) {
+        return playerMap.getOrDefault(playerId, 0);
+    }
+}

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

@@ -118,6 +118,8 @@ public final class MarchOfTheMachineCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Flamerush Rider", 279, Rarity.RARE, mage.cards.f.FlamerushRider.class));
         cards.add(new SetCardInfo("Flameshadow Conjuring", 280, Rarity.RARE, mage.cards.f.FlameshadowConjuring.class));
         cards.add(new SetCardInfo("Flight of Equenauts", 186, Rarity.UNCOMMON, mage.cards.f.FlightOfEquenauts.class));
+        cards.add(new SetCardInfo("Flockchaser Phantom", 41, Rarity.RARE, mage.cards.f.FlockchaserPhantom.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Flockchaser Phantom", 128, Rarity.RARE, mage.cards.f.FlockchaserPhantom.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Forgotten Ancient", 297, Rarity.RARE, mage.cards.f.ForgottenAncient.class));
         cards.add(new SetCardInfo("Fortified Village", 401, Rarity.RARE, mage.cards.f.FortifiedVillage.class));
         cards.add(new SetCardInfo("Foulmire Knight", 249, Rarity.UNCOMMON, mage.cards.f.FoulmireKnight.class));