Monarch attempt (Non-functional) with TestMonarch and sample card.

src/magic/model/action/BecomeMonarchAction.java

@@ -0,0 +1,26 @@
+package magic.model.action;
+
+import magic.model.MagicGame;
+import magic.model.MagicPlayer;
+import magic.model.MagicPlayerState;
+
+public class BecomeMonarchAction extends ChangePlayerStateAction {
+
+    private final MagicPlayer player;
+
+    public BecomeMonarchAction(MagicPlayer aPlayer) {
+        super(aPlayer, MagicPlayerState.Monarch);
+        player=aPlayer;
+    }
+
+    @Override
+    public void doAction(final MagicGame game) {
+        if (!player.isMonarch()) {
+            if (player.getOpponent().isMonarch()) {
+                player.getOpponent().clearState(MagicPlayerState.Monarch);
+            }
+            player.setState(MagicPlayerState.Monarch);
+            System.out.println("Player becomes monarch");
+        }
+    }
+}

src/magic/model/event/MagicRuleEventAction.java

@@ -2271,6 +2271,14 @@ public enum MagicRuleEventAction {
             return (game, event) -> game.doAction(new PlayTokenAction(event.getPlayer(), CardDefinitions.getToken("colorless Clue artifact token")));
         }
     },
+    BecomesMonarch(
+        "you become the monarch"
+    ){
+        @Override
+        public MagicEventAction getAction(final Matcher matcher) {
+            return (game, event) -> game.doAction(new BecomeMonarchAction(event.getPlayer()));
+        }
+    },
     BecomeBlocked(
         ARG.PERMANENTS + " become(s)? blocked",
         MagicTiming.Block,

src/magic/model/phase/MagicEndOfTurnPhase.java

@@ -1,7 +1,9 @@
 package magic.model.phase;
 
 import magic.model.MagicGame;
+import magic.model.MagicSource;
 import magic.model.action.ReturnExiledAction;
+import magic.model.event.MagicDrawEvent;
 import magic.model.trigger.MagicTriggerType;
 import magic.ui.MagicSound;
 
@@ -23,6 +25,9 @@ public class MagicEndOfTurnPhase extends MagicPhase {
         game.doAction(new ReturnExiledAction());
 
         // End of turn triggers.
+        if (game.getTurnPlayer().isMonarch()) {
+            game.addEvent(new MagicDrawEvent(MagicSource.NONE,game.getTurnPlayer(),1));
+        }
         game.executeTrigger(MagicTriggerType.AtEndOfTurn,game.getTurnPlayer());
         game.setStep(MagicStep.ActivePlayer);
     }

src/magic/test/TestMonarch.java

@@ -0,0 +1,33 @@
+package magic.test;
+
+import magic.model.MagicDuel;
+import magic.model.MagicGame;
+import magic.model.MagicPlayer;
+import magic.model.phase.MagicMainPhase;
+
+class TestMonarch extends TestGameBuilder {
+    public MagicGame getGame() {
+        final MagicDuel duel=createDuel();
+        final MagicGame game=duel.nextGame();
+        game.setPhase(MagicMainPhase.getFirstInstance());
+        final MagicPlayer player=game.getPlayer(0);
+        final MagicPlayer opponent=game.getPlayer(1);
+
+        MagicPlayer P = player;
+
+        P.setLife(20);
+        addToLibrary(P, "Plains", 10);
+        createPermanent(P,"Plains",8);
+        createPermanent(P,"Chromatic Lantern");
+        createPermanent(P,"Throne of the High City");
+
+
+        P = opponent;
+
+        P.setLife(20);
+        addToLibrary(P, "Plains", 10);
+        createPermanent(P,"Rupture Spire",false,8);
+
+        return game;
+    }
+}

src/magic/ui/duel/player/PlayerImagePanel.java

@@ -8,15 +8,17 @@ import java.awt.Image;
 import java.awt.RenderingHints;
 import java.awt.image.BufferedImage;
 import javax.swing.ImageIcon;
+
 import magic.data.GeneralConfig;
-import magic.ui.utility.GraphicsUtils;
+import magic.data.MagicIcon;
 import magic.ui.MagicImages;
-import magic.ui.utility.MagicStyle;
 import magic.ui.duel.CounterOverlay;
-import magic.ui.duel.viewer.info.PlayerViewerInfo;
 import magic.ui.duel.animation.AnimationFx;
 import magic.ui.duel.animation.MagicAnimations;
+import magic.ui.duel.viewer.info.PlayerViewerInfo;
 import magic.ui.theme.ThemeFactory;
+import magic.ui.utility.GraphicsUtils;
+import magic.ui.utility.MagicStyle;
 import org.pushingpixels.trident.Timeline;
 import org.pushingpixels.trident.ease.Spline;
 
@@ -62,7 +64,8 @@ public class PlayerImagePanel extends AnimationPanel {
         // health
         g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
         drawHealthValueOverlay(g2d, 0, 0, activeImage);
-
+        // monarch
+        drawMonarchOverlay(g2d);
         drawValidChoiceIndicator(g2d);
 
         // Animations
@@ -71,6 +74,18 @@ public class PlayerImagePanel extends AnimationPanel {
 
     }
 
+    private void drawMonarchOverlay(Graphics2D g2d) {
+        if (playerInfo.isMonarch()) {
+            final BufferedImage monarchImage = (BufferedImage)MagicImages.getIcon(MagicIcon.LOYALTYCOUNTER).getImage();
+            g2d.drawImage(
+                monarchImage,
+                4,
+                4,
+                null
+            );
+        }
+    }
+
     private void drawValidChoiceIndicator(Graphics2D g2d) {
         if (MagicAnimations.isOn(AnimationFx.AVATAR_PULSE)) {
             drawPulsingBorder(g2d);

src/magic/ui/duel/viewer/info/PlayerViewerInfo.java

@@ -25,6 +25,7 @@ public class PlayerViewerInfo {
     public final MagicCardList library;
     public final List<PermanentViewerInfo> permanents;
     private final boolean isAi;
+    private final boolean isMonarch;
     public final String playerLabel;
     private final ImageIcon avatar;
     private int gamesWon;
@@ -43,6 +44,7 @@ public class PlayerViewerInfo {
         exile = new MagicCardList(player.getExile());
         library = new MagicCardList(player.getLibrary());
         isAi = player.isArtificial();
+        isMonarch = player.isMonarch();
         permanents = new ArrayList<>();
         for (final MagicPermanent permanent : player.getPermanents()) {
             permanents.add(new PermanentViewerInfo(game, permanent));
@@ -58,6 +60,10 @@ public class PlayerViewerInfo {
         return this.isAi;
     }
 
+    public boolean isMonarch() {
+        return isMonarch;
+    }
+
     public boolean isHuman() {
         return !isAi();
     }