diff --git a/Mage/src/main/java/mage/game/Game.java b/Mage/src/main/java/mage/game/Game.java
index 3956dd24b7b..af57f22d9c8 100644
--- a/Mage/src/main/java/mage/game/Game.java
+++ b/Mage/src/main/java/mage/game/Game.java
@@ -466,4 +466,8 @@ public interface Game extends MageItem, Serializable {
     UUID getMonarchId();
 
     void setMonarchId(Ability source, UUID monarchId);
+
+    int addWithOverflowCheck(int base, int increment);
+
+    int subtractWithOverflowCheck(int base, int decrement);
 }