Elder Guardian appearance API

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -3295,6 +3295,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
     // Paper end
 
+    // Paper start
+    @Override
+    public void showElderGuardian(boolean silent) {
+        if (getHandle().connection != null) getHandle().connection.send(new ClientboundGameEventPacket(ClientboundGameEventPacket.GUARDIAN_ELDER_EFFECT, silent ? 0F : 1F));
+    }
+    // Paper end
+
     public Player.Spigot spigot()
     {
         return this.spigot;