Restructured Mage module

Mage/src/main/java/mage/constants/Duration.java

@@ -0,0 +1,30 @@
+package mage.constants;
+
+/**
+ *
+ * @author North
+ */
+public enum Duration {
+    OneUse(""),
+    EndOfGame("for the rest of the game"),
+    WhileOnBattlefield(""),
+    WhileOnStack(""),
+    WhileInGraveyard(""),
+    EndOfTurn("until end of turn"),
+    UntilYourNextTurn("until your next turn"),
+    EndOfCombat("until end of combat"),
+    EndOfStep("until end of phase step"),
+    Custom("");
+
+    private final String text;
+
+    Duration(String text) {
+        this.text = text;
+    }
+
+    @Override
+    public String toString() {
+        return text;
+    }
+
+}