* Added test for "Rollback doesn't unflip a newly flipped Jace." The problem is not reproducible (closes #1973).

Mage.Tests/src/test/java/org/mage/test/cards/planeswalker/JaceTest.java

@@ -1,9 +1,9 @@
-
 package org.mage.test.cards.planeswalker;
 
 import mage.constants.PhaseStep;
 import mage.constants.Zone;
 import mage.counters.CounterType;
+import org.junit.Assert;
 import org.junit.Test;
 import org.mage.test.serverside.base.CardTestPlayerBase;
 
@@ -73,6 +73,45 @@ public class JaceTest extends CardTestPlayerBase {
         assertPermanentCount(playerA, "Jace, Telepath Unbound", 1);
     }
 
+    /**
+     * Rollback doesn't unflip a newly flipped Jace #1973 Reporting on behalf of
+     * someone else (but he plays a lot on xmage) so I don't have any further
+     * information, but a rollback didn't reset a jace, vryn's prodigy. Haven't
+     * tried to recreate it.
+     */
+    @Test
+    public void rollbackDoesntUnflipJaceTest() {
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 4);
+        addCard(Zone.GRAVEYARD, playerA, "Mountain", 4);
+
+        // {T}: Draw a card, then discard a card. If there are five or more cards in your graveyard,
+        // exile Jace, Vryn's Prodigy, then return him to the battefield transformed under his owner's control.
+        addCard(Zone.BATTLEFIELD, playerA, "Jace, Vryn's Prodigy", 1); // {U}{1} - 0/2
+        addCard(Zone.HAND, playerA, "Pillarfield Ox", 1);
+
+        // Flash
+        // If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.
+        addCard(Zone.BATTLEFIELD, playerB, "Containment Priest", 1); // {2}{U}{U}
+
+        activateAbility(3, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Draw a card");
+        setChoice(playerA, "Pillarfield Ox");
+                     
+        setStopAt(3, PhaseStep.BEGIN_COMBAT);
+        execute();
+        
+        currentGame.rollbackTurns(0); // Start of turn 3
+
+        assertGraveyardCount(playerA, "Pillarfield Ox", 0); // Goes back to hand
+        assertHandCount(playerA, "Pillarfield Ox", 1);
+        
+        assertExileCount("Jace, Vryn's Prodigy", 0);
+        
+        assertPermanentCount(playerA, "Jace, Telepath Unbound", 0);
+        assertPermanentCount(playerA, "Jace, Vryn's Prodigy", 1);
+        
+        Assert.assertFalse("Jace, Vryn's Prodigy may not be flipped", getPermanent("Jace, Vryn's Prodigy").isFlipped());
+    }
+
     @Test
     public void vrynCannotCastAncestralVisions() {