From c63785748089471a030e400437d2e8d53226fe5e Mon Sep 17 00:00:00 2001
From: Evan Kranzler <theelk801@gmail.com>
Date: Sat, 23 Jun 2018 21:39:36 -0400
Subject: [PATCH] Added null detection to MageObjectReference

---
 Mage/src/main/java/mage/MageObjectReference.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Mage/src/main/java/mage/MageObjectReference.java b/Mage/src/main/java/mage/MageObjectReference.java
index c9e67326439..ff72668e405 100644
--- a/Mage/src/main/java/mage/MageObjectReference.java
+++ b/Mage/src/main/java/mage/MageObjectReference.java
@@ -1,4 +1,3 @@
-
 package mage;
 
 import java.io.Serializable;
@@ -24,6 +23,11 @@ public class MageObjectReference implements Comparable<MageObjectReference>, Ser
     private final int zoneChangeCounter;
 
     public MageObjectReference(MageObject mageObject, Game game) {
+        if (mageObject == null) {
+            this.sourceId = null;
+            this.zoneChangeCounter = -1;
+            return;
+        }
         this.sourceId = mageObject.getId();
         this.zoneChangeCounter = mageObject.getZoneChangeCounter(game);
     }