Begin implementing adventures.

Mage/src/main/java/mage/cards/AdventureCardSpell.java

@@ -0,0 +1,20 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package mage.cards;
+
+/**
+ *
+ * @author phulin
+ */
+public interface AdventureCardSpell extends Card {
+
+    @Override
+    AdventureCardSpell copy();
+
+    void setParentCard(AdventureCard card);
+
+    AdventureCard getParentCard();
+}