diff --git a/Mage.Sets/src/mage/cards/c/ChromeMox.java b/Mage.Sets/src/mage/cards/c/ChromeMox.java
index b3b414ee191..75fd118e48c 100644
--- a/Mage.Sets/src/mage/cards/c/ChromeMox.java
+++ b/Mage.Sets/src/mage/cards/c/ChromeMox.java
@@ -1,8 +1,5 @@
 package mage.cards.c;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.UUID;
 import mage.MageObject;
 import mage.Mana;
 import mage.ObjectColor;
@@ -30,8 +27,11 @@ import mage.target.TargetCard;
 import mage.util.CardUtil;
 import mage.util.GameLog;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+
 /**
- *
  * @author Plopman
  */
 public final class ChromeMox extends CardImpl {
@@ -141,7 +141,7 @@ class ChromeMoxManaEffect extends ManaEffect {
         Permanent permanent = game.getPermanent(source.getSourceId());
         if (permanent != null) {
             List<UUID> imprinted = permanent.getImprinted();
-            if (!imprinted.isEmpty()) {
+            if (imprinted != null && !imprinted.isEmpty()) {
                 Card imprintedCard = game.getCard(imprinted.get(0));
                 if (imprintedCard != null) {
                     ObjectColor color = imprintedCard.getColor(game);
@@ -172,7 +172,7 @@ class ChromeMoxManaEffect extends ManaEffect {
         Player player = game.getPlayer(source.getControllerId());
         if (permanent != null && player != null) {
             List<UUID> imprinted = permanent.getImprinted();
-            if (!imprinted.isEmpty()) {
+            if (imprinted != null && !imprinted.isEmpty()) {
                 Card imprintedCard = game.getCard(imprinted.get(0));
                 if (imprintedCard != null) {
                     Choice choice = new ChoiceColor(true);
diff --git a/Mage.Sets/src/mage/cards/c/CloneShell.java b/Mage.Sets/src/mage/cards/c/CloneShell.java
index 47b9d5f20aa..84171a085bd 100644
--- a/Mage.Sets/src/mage/cards/c/CloneShell.java
+++ b/Mage.Sets/src/mage/cards/c/CloneShell.java
@@ -115,7 +115,7 @@ class CloneShellDiesEffect extends OneShotEffect {
             Permanent permanent = (Permanent) game.getLastKnownInformation(source.getSourceId(), Zone.BATTLEFIELD);
             if (permanent != null) {
                 List<UUID> imprinted = permanent.getImprinted();
-                if (!imprinted.isEmpty()) {
+                if (imprinted != null && !imprinted.isEmpty()) {
                     Card imprintedCard = game.getCard(imprinted.get(0));
                     if (imprintedCard != null) {
                         imprintedCard.setFaceDown(false, game);
diff --git a/Mage.Sets/src/mage/cards/d/Duplicant.java b/Mage.Sets/src/mage/cards/d/Duplicant.java
index 4abfea60c3f..6cbb058cdf1 100644
--- a/Mage.Sets/src/mage/cards/d/Duplicant.java
+++ b/Mage.Sets/src/mage/cards/d/Duplicant.java
@@ -1,8 +1,5 @@
-
 package mage.cards.d;
 
-import java.util.List;
-import java.util.UUID;
 import mage.MageInt;
 import mage.MageObject;
 import mage.abilities.Ability;
@@ -22,8 +19,10 @@ import mage.game.Game;
 import mage.game.permanent.Permanent;
 import mage.target.common.TargetCreaturePermanent;
 
+import java.util.List;
+import java.util.UUID;
+
 /**
- *
  * @author Plopman
  */
 public final class Duplicant extends CardImpl {
@@ -117,6 +116,9 @@ class DuplicantContinuousEffect extends ContinuousEffectImpl {
         if (permanent != null) {
             if (!permanent.getImprinted().isEmpty()) {
                 List<UUID> imprinted = permanent.getImprinted();
+                if (imprinted == null || imprinted.isEmpty()) {
+                    return false;
+                }
                 Card card = game.getCard(imprinted.get(imprinted.size() - 1));
                 if (card != null && card.isCreature()) {
                     switch (layer) {
@@ -134,7 +136,6 @@ class DuplicantContinuousEffect extends ContinuousEffectImpl {
                             }
                     }
                     return true;
-
                 }
             }
 
diff --git a/Mage.Sets/src/mage/cards/s/SemblanceAnvil.java b/Mage.Sets/src/mage/cards/s/SemblanceAnvil.java
index 4b6a0acc3f2..dba8d34db80 100644
--- a/Mage.Sets/src/mage/cards/s/SemblanceAnvil.java
+++ b/Mage.Sets/src/mage/cards/s/SemblanceAnvil.java
@@ -1,8 +1,5 @@
-
 package mage.cards.s;
 
-import java.util.List;
-import java.util.UUID;
 import mage.abilities.Ability;
 import mage.abilities.SpellAbility;
 import mage.abilities.common.EntersBattlefieldTriggeredAbility;
@@ -21,6 +18,9 @@ import mage.players.Player;
 import mage.target.TargetCard;
 import mage.util.CardUtil;
 
+import java.util.List;
+import java.util.UUID;
+
 /**
  * @author nantuko
  */
@@ -113,11 +113,9 @@ class SemblanceAnvilCostReductionEffect extends CostModificationEffectImpl {
                 Permanent permanent = game.getPermanent(source.getSourceId());
                 if (permanent != null) {
                     List<UUID> imprinted = permanent.getImprinted();
-                    if (!imprinted.isEmpty()) {
+                    if (imprinted != null && !imprinted.isEmpty()) {
                         Card imprintedCard = game.getCard(imprinted.get(0));
-                        if (imprintedCard != null && imprintedCard.shareTypes(sourceCard)) {
-                            return true;
-                        }
+                        return imprintedCard != null && imprintedCard.shareTypes(sourceCard);
                     }
                 }
             }