diff --git a/Lib9c.Abstractions/IRapidCombinationV2.cs b/Lib9c.Abstractions/IRapidCombinationV2.cs
new file mode 100644
index 000000000..90e73825c
--- /dev/null
+++ b/Lib9c.Abstractions/IRapidCombinationV2.cs
@@ -0,0 +1,13 @@
+#nullable enable
+
+using System.Collections.Generic;
+using Libplanet.Crypto;
+
+namespace Lib9c.Abstractions
+{
+    public interface IRapidCombinationV2
+    {
+        Address AvatarAddress { get; }
+        List<int> SlotIndexList { get; }
+    }
+}
diff --git a/Lib9c/Action/RapidCombination.cs b/Lib9c/Action/RapidCombination.cs
index 79bd36339..a5592c907 100644
--- a/Lib9c/Action/RapidCombination.cs
+++ b/Lib9c/Action/RapidCombination.cs
@@ -3,6 +3,7 @@
 using System.Collections.Immutable;
 using System.Linq;
 using Bencodex.Types;
+using Lib9c.Abstractions;
 using Libplanet.Action;
 using Libplanet.Action.State;
 using Libplanet.Crypto;
@@ -22,11 +23,14 @@ namespace Nekoyume.Action
     /// </summary>
     [Serializable]
     [ActionType("rapid_combination10")]
-    public class RapidCombination : GameAction
+    public class RapidCombination : GameAction, IRapidCombinationV2
     {
         public Address avatarAddress;
         public List<int> slotIndexList = new List<int>();
 
+        Address IRapidCombinationV2.AvatarAddress => avatarAddress;
+        List<int> IRapidCombinationV2.SlotIndexList => slotIndexList;
+
         public override IWorld Execute(IActionContext context)
         {
             context.UseGas(1);