- Fix a bug with the deck editors crashing when trying determine if a card can be shown to a player (please review, not sure if this is the optimal/preferred solution).

src/main/java/forge/control/FControl.java

@@ -298,6 +298,10 @@ public enum FControl {
     }
     
     public boolean mayShowCard(Card c) {
+        if (match == null) {
+            return true;
+        }
+
         Player p = match.getCurrentGame().getPhaseHandler().getPriorityPlayer();
         return c.canBeShownTo(p);
     }