diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/rules/AlternativeCostRuleTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/rules/AlternativeCostRuleTest.java
index 2efc8e23a0e..de236dbb887 100644
--- a/Mage.Tests/src/test/java/org/mage/test/cards/rules/AlternativeCostRuleTest.java
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/rules/AlternativeCostRuleTest.java
@@ -8,18 +8,18 @@ import org.junit.Test;
 import org.mage.test.serverside.base.CardTestPlayerBase;
 
 /**
- *
- * @author magenoxx_at_googlemail.com
+ * @author magenoxx_at_googlemail.com, JayDi85
  */
 public class AlternativeCostRuleTest extends CardTestPlayerBase {
 
     @Test
-    public void testAlternativeCostDisplayed() {
+    public void test_DisplayedText() {
         addCard(Zone.GRAVEYARD, playerA, "Firewild Borderpost");
 
+        setStrictChooseMode(true);
         setStopAt(1, PhaseStep.BEGIN_COMBAT);
         execute();
-
+        
         Card firewildBorderpost = playerA.getGraveyard().getCards(currentGame).iterator().next();
         boolean found = false;
         for (String rule : firewildBorderpost.getRules(currentGame)) {
@@ -31,5 +31,60 @@ public class AlternativeCostRuleTest extends CardTestPlayerBase {
         Assert.assertTrue("Couldn't find rule text for alternative cost on a card: " + firewildBorderpost.getName(), found);
     }
 
+    @Test
+    public void test_AlternativeCostSourceAbility_OneCardMustNotAffectAnother() {
+        // You may pay {W}{U}{B}{R}{G} rather than pay Bringer of the Black Dawn's mana cost.
+        addCard(Zone.HAND, playerA, "Bringer of the Black Dawn"); // {7}{B}{B}
+        //
+        addCard(Zone.HAND, playerA, "Alpha Tyrranax"); // {4}{G}{G}
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Swamp", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 1);
+        addCard(Zone.HAND, playerA, "Forest");
 
+        // alpha don't have mana
+        checkPlayableAbility("before", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Bringer of the Black Dawn", true);
+        checkPlayableAbility("before", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Alpha Tyrranax", false);
+
+        // add additional mana for alpha to cast
+        playLand(1, PhaseStep.POSTCOMBAT_MAIN, playerA, "Forest");
+        checkPlayableAbility("after", 1, PhaseStep.POSTCOMBAT_MAIN, playerA, "Cast Bringer of the Black Dawn", true);
+        checkPlayableAbility("after", 1, PhaseStep.POSTCOMBAT_MAIN, playerA, "Cast Alpha Tyrranax", true);
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.END_TURN);
+        execute();
+    }
+
+    @Test
+    public void test_AlternativeCostSourceAbility_PlayerAlternativeCostMustAffectAllCards() {
+        // You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.
+        addCard(Zone.HAND, playerA, "Fist of Suns"); // {3}
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 3);
+        //
+        addCard(Zone.HAND, playerA, "Alpha Tyrranax"); // {4}{G}{G}
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Swamp", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 1);
+        addCard(Zone.HAND, playerA, "Forest");
+
+        // alpha don't have mana
+        checkPlayableAbility("before", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Fist of Suns", true);
+        checkPlayableAbility("before", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Alpha Tyrranax", false);
+
+        // add artifact and allows wubrg cost for alpha
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {R}", 3);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Fist of Suns");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPermanentCount("after", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Fist of Suns", 1);
+        checkPlayableAbility("after", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Alpha Tyrranax", true);
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.END_TURN);
+        execute();
+    }
 }