* Flashback - Fixed that spells without mana costs (e.g. Ancestral Vision) wrongly could be cast by flashback (fixes #1510).

Mage.Tests/src/test/java/org/mage/test/cards/abilities/keywords/FlashbackTest.java

@@ -178,4 +178,40 @@ public class FlashbackTest extends CardTestPlayerBase {
         assertExileCount("Conflagrate", 1);
 
     }
+
+    /**
+     * Ancestral Vision has no casting cost (this is different to a casting cost
+     * of {0}). Snapcaster Mage, for example, is able to give it flashback
+     * whilst it is in the graveyard.
+     *
+     * However the controller should not be able to cast Ancestral Visions from
+     * the graveyard for {0} mana.
+     */
+    @Test
+    public void testFlashbackAncestralVision() {
+        // Suspend 4-{U}
+        // Target player draws three cards.
+        addCard(Zone.GRAVEYARD, playerA, "Ancestral Vision", 1);
+
+        // Flash
+        // When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.
+        addCard(Zone.HAND, playerA, "Snapcaster Mage", 1);
+
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 2);
+
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Snapcaster Mage");
+        addTarget(playerA, "Ancestral Vision");
+
+        activateAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Flashback");
+        addTarget(playerA, playerA);
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertHandCount(playerA, "Snapcaster Mage", 0);
+        assertPermanentCount(playerA, "Snapcaster Mage", 1);
+        assertGraveyardCount(playerA, "Ancestral Vision", 1);
+        assertHandCount(playerA, 0);
+
+    }
 }

Mage/src/main/java/mage/abilities/keyword/FlashbackAbility.java

@@ -86,6 +86,10 @@ public class FlashbackAbility extends SpellAbility {
         if (super.canActivate(playerId, game)) {
             Card card = game.getCard(getSourceId());
             if (card != null) {
+                // Cards with no Mana Costs cant't be flashbacked (e.g. Ancestral Vision)
+                if (card.getManaCost().isEmpty()) {
+                    return false;
+                }
                 // Flashback can never cast a split card by Fuse, because Fuse only works from hand
                 if (card.isSplitCard()) {
                     if (((SplitCard) card).getLeftHalfCard().getName().equals(abilityName)) {