[ONE] Implement Malcator, Purity Overseer

Mage.Sets/src/mage/cards/m/MalcatorPurityOverseer.java

@@ -0,0 +1,136 @@
+package mage.cards.m;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.common.BeginningOfEndStepTriggeredAbility;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.dynamicvalue.DynamicValue;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.abilities.hint.Hint;
+import mage.abilities.hint.ValueHint;
+import mage.constants.*;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.game.Game;
+import mage.game.events.EntersTheBattlefieldEvent;
+import mage.game.events.GameEvent;
+import mage.game.permanent.token.PhyrexianGolemToken;
+import mage.util.CardUtil;
+import mage.watchers.Watcher;
+
+/**
+ * @author TheElk801
+ */
+public final class MalcatorPurityOverseer extends CardImpl {
+
+    private static final Hint hint = new ValueHint(
+            "Artifacts that entered under your control this turn", MalcatorPurityOverseerValue.instance
+    );
+
+    public MalcatorPurityOverseer(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{W}{U}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+        this.subtype.add(SubType.PHYREXIAN);
+        this.subtype.add(SubType.ELEPHANT);
+        this.subtype.add(SubType.WIZARD);
+        this.power = new MageInt(1);
+        this.toughness = new MageInt(1);
+
+        // When Malcator, Purity Overseer enters the battlefield, create a 3/3 colorless Phyrexian Golem artifact creature token.
+        this.addAbility(new EntersBattlefieldTriggeredAbility(new CreateTokenEffect(new PhyrexianGolemToken())));
+
+        // At the beginning of your end step, if three or more artifacts entered the battlefield under your control this turn, create a 3/3 colorless Phyrexian Golem artifact creature token.
+        this.addAbility(new BeginningOfEndStepTriggeredAbility(
+                new CreateTokenEffect(new PhyrexianGolemToken()), TargetController.YOU,
+                MalcatorPurityOverseerCondition.instance, false
+        ));
+    }
+
+    private MalcatorPurityOverseer(final MalcatorPurityOverseer card) {
+        super(card);
+    }
+
+    @Override
+    public MalcatorPurityOverseer copy() {
+        return new MalcatorPurityOverseer(this);
+    }
+}
+
+enum MalcatorPurityOverseerCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return MalcatorPurityOverseerWatcher.checkPlayer(source, game);
+    }
+
+    @Override
+    public String toString() {
+        return "three or more artifacts entered the battlefield under your control this turn";
+    }
+}
+
+enum MalcatorPurityOverseerValue implements DynamicValue {
+    instance;
+
+    @Override
+    public int calculate(Game game, Ability sourceAbility, Effect effect) {
+        return MalcatorPurityOverseerWatcher.getCount(sourceAbility, game);
+    }
+
+    @Override
+    public MalcatorPurityOverseerValue copy() {
+        return this;
+    }
+
+    @Override
+    public String getMessage() {
+        return "";
+    }
+}
+
+class MalcatorPurityOverseerWatcher extends Watcher {
+
+    private final Map<UUID, Integer> map = new HashMap<>();
+
+    MalcatorPurityOverseerWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD
+                && ((EntersTheBattlefieldEvent) event).getTarget().isArtifact(game)) {
+            map.compute(event.getPlayerId(), CardUtil::setOrIncrementValue);
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        map.clear();
+    }
+
+    static boolean checkPlayer(Ability source, Game game) {
+        return game
+                .getState()
+                .getWatcher(MalcatorPurityOverseerWatcher.class)
+                .map
+                .getOrDefault(source.getControllerId(), 0) >= 3;
+    }
+
+    static int getCount(Ability source, Game game) {
+        return game
+                .getState()
+                .getWatcher(MalcatorPurityOverseerWatcher.class)
+                .map
+                .getOrDefault(source.getControllerId(), 0);
+    }
+}

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

@@ -57,6 +57,7 @@ public final class PhyrexiaAllWillBeOne extends ExpansionSet {
         cards.add(new SetCardInfo("Kaya, Intangible Slayer", 205, Rarity.RARE, mage.cards.k.KayaIntangibleSlayer.class));
         cards.add(new SetCardInfo("Kemba, Kha Enduring", 19, Rarity.RARE, mage.cards.k.KembaKhaEnduring.class));
         cards.add(new SetCardInfo("Koth, Fire of Resistance", 138, Rarity.RARE, mage.cards.k.KothFireOfResistance.class));
+        cards.add(new SetCardInfo("Malcator, Purity Overseer", 208, Rarity.RARE, mage.cards.m.MalcatorPurityOverseer.class));
         cards.add(new SetCardInfo("Maze Skullbomb", 231, Rarity.COMMON, mage.cards.m.MazeSkullbomb.class));
         cards.add(new SetCardInfo("Mercurial Spelldancer", 61, Rarity.RARE, mage.cards.m.MercurialSpelldancer.class));
         cards.add(new SetCardInfo("Mesmerizing Dose", 62, Rarity.COMMON, mage.cards.m.MesmerizingDose.class));