diff --git a/forge-core/src/main/java/forge/deck/DeckFormat.java b/forge-core/src/main/java/forge/deck/DeckFormat.java
index 31c7cbec4e1..d2c88264a1e 100644
--- a/forge-core/src/main/java/forge/deck/DeckFormat.java
+++ b/forge-core/src/main/java/forge/deck/DeckFormat.java
@@ -28,10 +28,12 @@ import org.apache.commons.lang3.Range;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 
 import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
 import com.google.common.collect.ImmutableSet;
 
 import forge.StaticData;
 import forge.card.CardRules;
+import forge.card.CardRulesPredicates;
 import forge.card.CardType;
 import forge.card.ICardFace;
 import forge.deck.generation.DeckGenPool;
@@ -383,13 +385,11 @@ public enum DeckFormat {
         };
     }
 
-    public Predicate<PaperCard> isLegalCardForCommanderPredicate(PaperCard commander) {
-        final byte cmdCI = commander.getRules().getColorIdentity().getColor(); 
-        return new Predicate<PaperCard>() {
-            @Override
-            public boolean apply(PaperCard card) {
-                return card.getRules().getColorIdentity().hasNoColorsExcept(cmdCI);
-            }
-        };
+    public Predicate<PaperCard> isLegalCardForCommanderPredicate(List<PaperCard> commanders) {
+        byte cmdCI = 0;
+        for (final PaperCard p : commanders) {
+            cmdCI |= p.getRules().getColorIdentity().getColor();
+        }
+        return Predicates.compose(CardRulesPredicates.hasColorIdentity(cmdCI), PaperCard.FN_GET_RULES);
     }
 }
diff --git a/forge-gui-mobile/src/forge/deck/FDeckEditor.java b/forge-gui-mobile/src/forge/deck/FDeckEditor.java
index c26e0f9641c..72c4ac74395 100644
--- a/forge-gui-mobile/src/forge/deck/FDeckEditor.java
+++ b/forge-gui-mobile/src/forge/deck/FDeckEditor.java
@@ -40,6 +40,7 @@ import forge.toolbox.FEvent.FEventHandler;
 import forge.toolbox.FEvent.FEventType;
 import forge.util.Callback;
 import forge.util.ItemPool;
+import forge.util.Lang;
 import forge.util.Utils;
 import forge.util.storage.IStorage;
 
@@ -523,8 +524,8 @@ public class FDeckEditor extends TabPageScreen<FDeckEditor> {
 
     protected void save(final Callback<Boolean> callback) {
         if (StringUtils.isEmpty(deck.getName())) {
-            PaperCard commander = deck.getCommander();
-            String initialInput = commander == null ? "" : commander.getName(); //use commander name as default deck name
+            List<PaperCard> commanders = deck.getCommanders(); //use commander name as default deck name
+            String initialInput = Lang.joinHomogenous(commanders); 
             FOptionPane.showInputDialog("Enter name for new deck", initialInput, new Callback<String>() {
                 @Override
                 public void run(String result) {
@@ -915,15 +916,15 @@ public class FDeckEditor extends TabPageScreen<FDeckEditor> {
                 break;
             case Commander:
             case TinyLeaders:
-                final PaperCard commander = parentScreen.getDeck().getCommander();
-                if (commander == null) {
+                final List<PaperCard> commanders = parentScreen.getDeck().getCommanders();
+                if (commanders.isEmpty()) {
                     //if no commander set for deck, only show valid commanders
                     additionalFilter = DeckFormat.Commander.isLegalCommanderPredicate();
                     cardManager.setCaption("Commanders");
                 }
                 else {
                     //if a commander has been set, only show cards that match its color identity
-                    additionalFilter = DeckFormat.Commander.isLegalCardForCommanderPredicate(commander);
+                    additionalFilter = DeckFormat.Commander.isLegalCardForCommanderPredicate(commanders);
                     cardManager.setCaption("Cards");
                 }
                 //fall through to below
@@ -951,7 +952,7 @@ public class FDeckEditor extends TabPageScreen<FDeckEditor> {
         }
 
         private boolean needsCommander() {
-            return parentScreen.getCommanderPage() != null && parentScreen.getDeck().getCommander() == null;
+            return parentScreen.getCommanderPage() != null && parentScreen.getDeck().getCommanders().isEmpty();
         }
 
         private void setCommander(PaperCard card) {
diff --git a/forge-gui/src/main/java/forge/planarconquest/ConquestRegion.java b/forge-gui/src/main/java/forge/planarconquest/ConquestRegion.java
index 1fe410a3a3a..343aca1dd06 100644
--- a/forge-gui/src/main/java/forge/planarconquest/ConquestRegion.java
+++ b/forge-gui/src/main/java/forge/planarconquest/ConquestRegion.java
@@ -10,6 +10,7 @@ import com.google.common.base.Predicates;
 
 import forge.GuiBase;
 import forge.assets.ISkinImage;
+import forge.card.CardRulesPredicates;
 import forge.card.ColorSet;
 import forge.deck.generation.DeckGenPool;
 import forge.item.PaperCard;
@@ -112,13 +113,7 @@ public class ConquestRegion {
                     break;
                 case "colors":
                     colorSet = ColorSet.fromNames(value.toCharArray());
-                    final int colorMask = colorSet.getColor();
-                    pred = new Predicate<PaperCard>() {
-                        @Override
-                        public boolean apply(PaperCard pc) {
-                            return pc.getRules().getColorIdentity().hasNoColorsExcept(colorMask);
-                        }
-                    };
+                    pred = Predicates.compose(CardRulesPredicates.hasColorIdentity(colorSet.getColor()), PaperCard.FN_GET_RULES);
                     break;
                 case "sets":
                     final String[] sets = value.split(",");
diff --git a/forge-gui/src/main/java/forge/planarconquest/ConquestUtil.java b/forge-gui/src/main/java/forge/planarconquest/ConquestUtil.java
index a8b926232af..5772267719d 100644
--- a/forge-gui/src/main/java/forge/planarconquest/ConquestUtil.java
+++ b/forge-gui/src/main/java/forge/planarconquest/ConquestUtil.java
@@ -8,7 +8,9 @@ import java.util.List;
 import java.util.Map.Entry;
 
 import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
 import com.google.common.collect.Iterables;
+import com.google.common.collect.Lists;
 
 import forge.assets.FSkinProp;
 import forge.assets.IHasSkinProp;
@@ -129,13 +131,9 @@ public class ConquestUtil {
 
         //remove any cards that aren't allowed in deck due to color identity
         if (colorIdentity != MagicColor.ALL_COLORS) {
-            List<PaperCard> invalidCards = new ArrayList<PaperCard>();
-            for (PaperCard pc : availableCards) {
-                if (!pc.getRules().getColorIdentity().hasNoColorsExcept(colorIdentity)) {
-                    invalidCards.add(pc);
-                }
-            }
-            availableCards.removeAll(invalidCards);
+            Predicate<PaperCard> pred = DeckFormat.Commander.isLegalCardForCommanderPredicate(deck.getCommanders());
+
+            availableCards.retainAll(Lists.newArrayList(Iterables.filter(availableCards, pred)));
         }
 
         //create pool from available cards