- Fixed theme decks being affected by Singleton mode.

src/main/java/forge/deck/generate/GenerateColoredDeckBase.java

@@ -48,7 +48,7 @@ import forge.util.closures.Predicate;
 public abstract class GenerateColoredDeckBase {
     protected final Random r = MyRandom.getRandom();
     protected final Map<String, Integer> cardCounts = new HashMap<String, Integer>();
-    protected final int maxDuplicates;
+    protected int maxDuplicates;
 
     protected CardColor colors;
     protected final ItemPool<CardPrinted> tDeck;

src/main/java/forge/deck/generate/GenerateThemeDeck.java

@@ -47,7 +47,7 @@ public class GenerateThemeDeck extends GenerateColoredDeckBase {
      * </p>
      */
     public GenerateThemeDeck() {
-
+        this.maxDuplicates = 4;
     }
 
     /**