Refactor - moved ZuberasDiedWatcher to shared area

Mage/src/main/java/mage/watchers/common/ZuberasDiedWatcher.java

@@ -0,0 +1,48 @@
+package mage.watchers.common;
+
+import mage.MageObject;
+import mage.constants.WatcherScope;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeEvent;
+import mage.watchers.Watcher;
+
+/**
+ * Created by Eric on 9/24/2016.
+ */
+public class ZuberasDiedWatcher extends Watcher {
+
+    public int zuberasDiedThisTurn = 0;
+
+    public ZuberasDiedWatcher() {
+        super("ZuberasDied", WatcherScope.GAME);
+    }
+
+    public ZuberasDiedWatcher(final ZuberasDiedWatcher watcher) {
+        super(watcher);
+        this.zuberasDiedThisTurn = watcher.zuberasDiedThisTurn;
+    }
+
+    @Override
+    public ZuberasDiedWatcher copy() {
+        return new ZuberasDiedWatcher(this);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.ZONE_CHANGE && ((ZoneChangeEvent) event).isDiesEvent()) {
+            MageObject card = game.getLastKnownInformation(event.getTargetId(), Zone.BATTLEFIELD);
+            if (card != null && card.hasSubtype("Zubera", game)) {
+                zuberasDiedThisTurn++;
+            }
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        zuberasDiedThisTurn = 0;
+    }
+
+}