[C21] Implemented Combat Calligrapher

Mage/src/main/java/mage/game/events/DefenderAttackedEvent.java

@@ -0,0 +1,37 @@
+package mage.game.events;
+
+import mage.MageObjectReference;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * @author TheElk801
+ */
+public class DefenderAttackedEvent extends GameEvent {
+
+    private final Set<MageObjectReference> morSet = new HashSet<>();
+
+    public DefenderAttackedEvent(UUID targetId, UUID playerId) {
+        super(EventType.DEFENDER_ATTACKED, targetId, null, playerId);
+
+    }
+
+    public static void makeAddEvents(Map<UUID, Set<MageObjectReference>> morMapSet, UUID attackingPlayerId, Game game) {
+        for (Map.Entry<UUID, Set<MageObjectReference>> entry : morMapSet.entrySet()) {
+            DefenderAttackedEvent event = new DefenderAttackedEvent(entry.getKey(), attackingPlayerId);
+            event.morSet.addAll(entry.getValue());
+            game.addSimultaneousEvent(event);
+        }
+    }
+
+    public List<Permanent> getAttackers(Game game) {
+        return morSet
+                .stream()
+                .map(mor -> mor.getPermanent(game))
+                .filter(Objects::nonNull)
+                .collect(Collectors.toList());
+    }
+}