diff --git a/Application/Game/Card/Write/WriteCondCommand.cs b/Application/Game/Card/Write/WriteCondCommand.cs
new file mode 100644
index 0000000..98a4846
--- /dev/null
+++ b/Application/Game/Card/Write/WriteCondCommand.cs
@@ -0,0 +1,14 @@
+namespace Application.Game.Card.Write;
+
+public record WriteCondCommand(long CardId, string Data) : IRequestWrapper<string>;
+
+public class WriteCondCommandHandler : RequestHandlerBase<WriteCondCommand, string>
+{
+    public WriteCondCommandHandler(ICardDependencyAggregate aggregate) : base(aggregate) {}
+
+    public override Task<ServiceResult<string>> Handle(WriteCondCommand request, CancellationToken cancellationToken)
+    {
+        // TODO: Add proper implementation
+        return Task.FromResult(new ServiceResult<string>(request.Data));
+    }
+}
\ No newline at end of file
diff --git a/Domain/Enums/CardRequestType.cs b/Domain/Enums/CardRequestType.cs
index 5c1fd75..67c446e 100644
--- a/Domain/Enums/CardRequestType.cs
+++ b/Domain/Enums/CardRequestType.cs
@@ -53,6 +53,7 @@ public enum CardRequestType
     WriteCoin         = 980,
     WriteUnlockKeynum = 1020,
     WriteSoundEffect  = 8969,
+    WriteCond         = 8976,
 
     #endregion
 
diff --git a/MainServer/Controllers/Game/CardController.cs b/MainServer/Controllers/Game/CardController.cs
index 063d815..8e70574 100644
--- a/MainServer/Controllers/Game/CardController.cs
+++ b/MainServer/Controllers/Game/CardController.cs
@@ -25,7 +25,7 @@ public class CardController : BaseController<CardController>
         cardCommandType.Throw().IfOutOfRange();
         if (cardCommandType is CardCommandType.CardReadRequest or CardCommandType.CardWriteRequest)
         {
-            cardRequestType.Throw().IfOutOfRange();
+            cardRequestType.Throw($"Failed to process {cardCommandType.ToString()}").IfOutOfRange();
         }
 
         request.Data = WebUtility.UrlDecode(request.Data);
@@ -84,6 +84,8 @@ public class CardController : BaseController<CardController>
                         new WriteUnlockKeynumCommand(request.CardId, request.Data)),
                     CardRequestType.WriteSoundEffect => await Mediator.Send(
                         new WriteSoundEffectCommand(request.CardId, request.Data)),
+                    CardRequestType.WriteCond => await Mediator.Send(
+                        new WriteCondCommand(request.CardId, request.Data)),
                     CardRequestType.StartOnlineMatching => await Mediator.Send(
                         new StartOnlineMatchingCommand(request.CardId, request.Data)),
                     CardRequestType.UpdateOnlineMatching => await Mediator.Send(