diff --git a/Mage.Sets/src/mage/cards/b/BileBlight.java b/Mage.Sets/src/mage/cards/b/BileBlight.java
index 0b237561908..77b3e4f0fbc 100644
--- a/Mage.Sets/src/mage/cards/b/BileBlight.java
+++ b/Mage.Sets/src/mage/cards/b/BileBlight.java
@@ -61,7 +61,7 @@ class BileBlightEffect extends BoostAllEffect {
                 } else {
                     String name = target.getName();
                     for (Permanent perm : game.getBattlefield().getActivePermanents(source.getControllerId(), game)) {
-                        if (CardUtil.haveSameNames(perm.getName(), name)) {
+                        if (CardUtil.haveSameNames(perm, name, game)) {
                             affectedObjectList.add(new MageObjectReference(perm, game));
                         }
                     }
diff --git a/Mage.Sets/src/mage/cards/b/BrainPry.java b/Mage.Sets/src/mage/cards/b/BrainPry.java
index 555d1368c16..8704271ed89 100644
--- a/Mage.Sets/src/mage/cards/b/BrainPry.java
+++ b/Mage.Sets/src/mage/cards/b/BrainPry.java
@@ -60,7 +60,7 @@ class BrainPryEffect extends OneShotEffect {
         if (targetPlayer != null && controller != null && sourceObject != null && cardName != null) {
             boolean hasDiscarded = false;
             for (Card card : targetPlayer.getHand().getCards(game)) {
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     targetPlayer.discard(card, source, game);
                     hasDiscarded = true;
                     break;
diff --git a/Mage.Sets/src/mage/cards/c/CabalTherapist.java b/Mage.Sets/src/mage/cards/c/CabalTherapist.java
index 53d044bd862..66ed076a807 100644
--- a/Mage.Sets/src/mage/cards/c/CabalTherapist.java
+++ b/Mage.Sets/src/mage/cards/c/CabalTherapist.java
@@ -90,18 +90,7 @@ class CabalTherapistDiscardEffect extends OneShotEffect {
             if (card == null) {
                 return true;
             }
-            if (card.isSplitCard()) {
-                SplitCard splitCard = (SplitCard) card;
-                if (CardUtil.haveSameNames(splitCard.getLeftHalfCard().getName(), cardName)) {
-                    return false;
-                } else if (CardUtil.haveSameNames(splitCard.getRightHalfCard().getName(), cardName)) {
-                    return false;
-                }
-            }
-            if (CardUtil.haveSameNames(card.getName(), cardName)) {
-                return false;
-            }
-            return true;
+            return !CardUtil.haveSameNames(card, cardName, game);
         });
         targetPlayer.discard(hand, source, game);
         return true;
diff --git a/Mage.Sets/src/mage/cards/c/CabalTherapy.java b/Mage.Sets/src/mage/cards/c/CabalTherapy.java
index 6aad9ff861c..0a25b54b9c0 100644
--- a/Mage.Sets/src/mage/cards/c/CabalTherapy.java
+++ b/Mage.Sets/src/mage/cards/c/CabalTherapy.java
@@ -75,18 +75,7 @@ class CabalTherapyEffect extends OneShotEffect {
             if (card == null) {
                 return true;
             }
-            if (card.isSplitCard()) {
-                SplitCard splitCard = (SplitCard) card;
-                if (CardUtil.haveSameNames(splitCard.getLeftHalfCard().getName(), cardName)) {
-                    return false;
-                } else if (CardUtil.haveSameNames(splitCard.getRightHalfCard().getName(), cardName)) {
-                    return false;
-                }
-            }
-            if (CardUtil.haveSameNames(card.getName(), cardName)) {
-                return false;
-            }
-            return true;
+            return !CardUtil.haveSameNames(card, cardName, game);
         });
         targetPlayer.discard(hand, source, game);
         return true;
diff --git a/Mage.Sets/src/mage/cards/c/ConundrumSphinx.java b/Mage.Sets/src/mage/cards/c/ConundrumSphinx.java
index 6baed0ceb09..4bddff8c30a 100644
--- a/Mage.Sets/src/mage/cards/c/ConundrumSphinx.java
+++ b/Mage.Sets/src/mage/cards/c/ConundrumSphinx.java
@@ -85,7 +85,7 @@ class ConundrumSphinxEffect extends OneShotEffect {
                         if (card != null) {
                             Cards cards = new CardsImpl(card);
                             player.revealCards(source, player.getName(), cards, game);
-                            if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                            if (CardUtil.haveSameNames(card, cardName, game)) {
                                 player.moveCards(cards, Zone.HAND, source, game);
                             } else {
                                 player.putCardsOnBottomOfLibrary(cards, game, source, false);
diff --git a/Mage.Sets/src/mage/cards/c/CorrosiveOoze.java b/Mage.Sets/src/mage/cards/c/CorrosiveOoze.java
index d6845d3243b..543b50c756f 100644
--- a/Mage.Sets/src/mage/cards/c/CorrosiveOoze.java
+++ b/Mage.Sets/src/mage/cards/c/CorrosiveOoze.java
@@ -133,7 +133,7 @@ class CorrosiveOozeCombatWatcher extends Watcher {
         if (event.getType() == GameEvent.EventType.BLOCKER_DECLARED) {
             Permanent attacker = game.getPermanent(event.getTargetId());
             Permanent blocker = game.getPermanent(event.getSourceId());
-            if (attacker != null && CardUtil.haveSameNames(attacker.getName(), "Corrosive Ooze")) { // To check for name is not working if Ooze is copied but name changed
+            if (attacker != null && CardUtil.haveSameNames(attacker, "Corrosive Ooze", game)) { // To check for name is not working if Ooze is copied but name changed
                 if (blocker != null && hasAttachedEquipment(game, blocker)) {
                     MageObjectReference oozeMor = new MageObjectReference(attacker, game);
                     Set<MageObjectReference> relatedCreatures = oozeBlocksOrBlocked.getOrDefault(oozeMor, new HashSet<>());
@@ -141,7 +141,7 @@ class CorrosiveOozeCombatWatcher extends Watcher {
                     oozeBlocksOrBlocked.put(oozeMor, relatedCreatures);
                 }
             }
-            if (blocker != null && CardUtil.haveSameNames(blocker.getName(), "Corrosive Ooze")) {
+            if (blocker != null && CardUtil.haveSameNames(blocker, "Corrosive Ooze", game)) {
                 if (attacker != null && hasAttachedEquipment(game, attacker)) {
                     MageObjectReference oozeMor = new MageObjectReference(blocker, game);
                     Set<MageObjectReference> relatedCreatures = oozeBlocksOrBlocked.getOrDefault(oozeMor, new HashSet<>());
diff --git a/Mage.Sets/src/mage/cards/c/CouncilOfTheAbsolute.java b/Mage.Sets/src/mage/cards/c/CouncilOfTheAbsolute.java
index a6e289d8f46..90fd017f89b 100644
--- a/Mage.Sets/src/mage/cards/c/CouncilOfTheAbsolute.java
+++ b/Mage.Sets/src/mage/cards/c/CouncilOfTheAbsolute.java
@@ -93,7 +93,7 @@ class CouncilOfTheAbsoluteReplacementEffect extends ContinuousRuleModifyingEffec
         if (game.getOpponents(source.getControllerId()).contains(event.getPlayerId())) {
             MageObject object = game.getObject(event.getSourceId());
             String needName = (String) game.getState().getValue(source.getSourceId().toString() + ChooseACardNameEffect.INFO_KEY);
-            return object != null && CardUtil.haveSameNames(object.getName(), needName);
+            return object != null && CardUtil.haveSameNames(object, needName, game);
         }
         return false;
     }
@@ -123,7 +123,7 @@ class CouncilOfTheAbsoluteCostReductionEffect extends CostModificationEffectImpl
             Card card = game.getCard(abilityToModify.getSourceId());
             if (card != null) {
                 String needName = (String) game.getState().getValue(source.getSourceId().toString() + ChooseACardNameEffect.INFO_KEY);
-                return CardUtil.haveSameNames(card.getName(), needName);
+                return CardUtil.haveSameNames(card, needName, game);
             }
         }
         return false;
diff --git a/Mage.Sets/src/mage/cards/c/CrownOfEmpires.java b/Mage.Sets/src/mage/cards/c/CrownOfEmpires.java
index f5bfddfe290..9089c535cfc 100644
--- a/Mage.Sets/src/mage/cards/c/CrownOfEmpires.java
+++ b/Mage.Sets/src/mage/cards/c/CrownOfEmpires.java
@@ -61,9 +61,9 @@ class CrownOfEmpiresEffect extends OneShotEffect {
         boolean scepter = false;
         boolean throne = false;
         for (Permanent permanent : game.getBattlefield().getAllActivePermanents(source.getControllerId())) {
-            if (CardUtil.haveSameNames(permanent.getName(), "Scepter of Empires")) {
+            if (CardUtil.haveSameNames(permanent, "Scepter of Empires", game)) {
                 scepter = true;
-            } else if (CardUtil.haveSameNames(permanent.getName(), "Throne of Empires")) {
+            } else if (CardUtil.haveSameNames(permanent, "Throne of Empires", game)) {
                 throne = true;
             }
             if (scepter && throne) break;
diff --git a/Mage.Sets/src/mage/cards/c/CursedScroll.java b/Mage.Sets/src/mage/cards/c/CursedScroll.java
index 70d1e5f0485..6ed0c99568f 100644
--- a/Mage.Sets/src/mage/cards/c/CursedScroll.java
+++ b/Mage.Sets/src/mage/cards/c/CursedScroll.java
@@ -70,7 +70,7 @@ class CursedScrollEffect extends OneShotEffect {
                 }
                 revealed.add(card);
                 controller.revealCards(sourceObject.getIdName(), revealed, game);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     Permanent creature = game.getPermanent(targetPointer.getFirst(game, source));
                     if (creature != null) {
                         creature.damage(2, source.getSourceId(), game, false, true);
diff --git a/Mage.Sets/src/mage/cards/d/DeathbellowWarCry.java b/Mage.Sets/src/mage/cards/d/DeathbellowWarCry.java
index 18824247a4b..1655ec9108d 100644
--- a/Mage.Sets/src/mage/cards/d/DeathbellowWarCry.java
+++ b/Mage.Sets/src/mage/cards/d/DeathbellowWarCry.java
@@ -72,6 +72,6 @@ class DeathbellowWarCryTarget extends TargetCardInLibrary {
                 .map(game::getCard)
                 .filter(Objects::nonNull)
                 .map(Card::getName)
-                .noneMatch(n -> CardUtil.haveSameNames(n, card.getName()));
+                .noneMatch(n -> CardUtil.haveSameNames(card, n, game));
     }
 }
diff --git a/Mage.Sets/src/mage/cards/d/DementiaSliver.java b/Mage.Sets/src/mage/cards/d/DementiaSliver.java
index 686a33a1ce4..1610c825ae9 100644
--- a/Mage.Sets/src/mage/cards/d/DementiaSliver.java
+++ b/Mage.Sets/src/mage/cards/d/DementiaSliver.java
@@ -86,7 +86,7 @@ class DementiaSliverEffect extends OneShotEffect {
                 if (card != null) {
                     revealed.add(card);
                     opponent.revealCards(sourceObject.getName(), revealed, game);
-                    if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                    if (CardUtil.haveSameNames(card, cardName, game)) {
                         opponent.discard(card, source, game);
                     }
                 }
diff --git a/Mage.Sets/src/mage/cards/d/Denied.java b/Mage.Sets/src/mage/cards/d/Denied.java
index b5825c8b1ea..596b96114f4 100644
--- a/Mage.Sets/src/mage/cards/d/Denied.java
+++ b/Mage.Sets/src/mage/cards/d/Denied.java
@@ -63,7 +63,7 @@ class DeniedEffect extends OneShotEffect {
             player.revealCards("Denied!", player.getHand(), game, true);
             String namedCard = (String) object;
             for (Card card : player.getHand().getCards(game)) {
-                if (card != null && CardUtil.haveSameNames(card.getName(), namedCard)) {
+                if (card != null && CardUtil.haveSameNames(card, namedCard, game)) {
                     game.getStack().counter(targetSpell.getId(), source.getSourceId(), game);
                     break;
                 }
diff --git a/Mage.Sets/src/mage/cards/d/DetentionSphere.java b/Mage.Sets/src/mage/cards/d/DetentionSphere.java
index 64943101ae9..c7a99d41a55 100644
--- a/Mage.Sets/src/mage/cards/d/DetentionSphere.java
+++ b/Mage.Sets/src/mage/cards/d/DetentionSphere.java
@@ -85,7 +85,7 @@ class DetentionSphereEntersEffect extends OneShotEffect {
             } else {
                 String name = targetPermanent.getName();
                 for (Permanent permanent : game.getBattlefield().getActivePermanents(source.getControllerId(), game)) {
-                    if (permanent != null && CardUtil.haveSameNames(permanent.getName(), name)) {
+                    if (permanent != null && CardUtil.haveSameNames(permanent, name, game)) {
                         controller.moveCardToExileWithInfo(permanent, exileId, sourceObject.getIdName(), source.getSourceId(), game, Zone.BATTLEFIELD, true);
                     }
                 }
diff --git a/Mage.Sets/src/mage/cards/d/DiviningWitch.java b/Mage.Sets/src/mage/cards/d/DiviningWitch.java
index 39e231aa203..a1a2f862bb3 100644
--- a/Mage.Sets/src/mage/cards/d/DiviningWitch.java
+++ b/Mage.Sets/src/mage/cards/d/DiviningWitch.java
@@ -92,7 +92,7 @@ public final class DiviningWitch extends CardImpl {
                     if (card != null) {
                         cardsToReaveal.add(card);
                         // Put that card into your hand
-                        if (CardUtil.haveSameNames(card.getName(), name)) {
+                        if (CardUtil.haveSameNames(card, name, game)) {
                             cardToHand = card;
                             break;
                         }
diff --git a/Mage.Sets/src/mage/cards/f/Foreshadow.java b/Mage.Sets/src/mage/cards/f/Foreshadow.java
index bfa869d0659..b3f778e9b3d 100644
--- a/Mage.Sets/src/mage/cards/f/Foreshadow.java
+++ b/Mage.Sets/src/mage/cards/f/Foreshadow.java
@@ -72,7 +72,7 @@ class ForeshadowEffect extends OneShotEffect {
             Card card = targetPlayer.getLibrary().getFromTop(game);
             if (card != null) {
                 controller.moveCards(card, Zone.GRAVEYARD, source, game);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     controller.drawCards(1, source.getSourceId(), game);
                 }
             }
diff --git a/Mage.Sets/src/mage/cards/l/LammastideWeave.java b/Mage.Sets/src/mage/cards/l/LammastideWeave.java
index 9cd195c43b9..b8f979f472c 100644
--- a/Mage.Sets/src/mage/cards/l/LammastideWeave.java
+++ b/Mage.Sets/src/mage/cards/l/LammastideWeave.java
@@ -71,7 +71,7 @@ class LammastideWeaveEffect extends OneShotEffect {
             Card card = targetPlayer.getLibrary().getFromTop(game);
             if (card != null) {
                 controller.moveCards(card, Zone.GRAVEYARD, source, game);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     controller.gainLife(card.getConvertedManaCost(), game, source);
                 }
             }
diff --git a/Mage.Sets/src/mage/cards/l/LiarsPendulum.java b/Mage.Sets/src/mage/cards/l/LiarsPendulum.java
index 195878591b6..e30258077d1 100644
--- a/Mage.Sets/src/mage/cards/l/LiarsPendulum.java
+++ b/Mage.Sets/src/mage/cards/l/LiarsPendulum.java
@@ -93,7 +93,7 @@ class LiarsPendulumEffect extends OneShotEffect {
                         rightGuess = opponentGuess;
                     }
                 }
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     rightGuess = opponentGuess;
                 }
             }
diff --git a/Mage.Sets/src/mage/cards/m/MagusOfTheScroll.java b/Mage.Sets/src/mage/cards/m/MagusOfTheScroll.java
index 71f059afe6d..3fd5ef28094 100644
--- a/Mage.Sets/src/mage/cards/m/MagusOfTheScroll.java
+++ b/Mage.Sets/src/mage/cards/m/MagusOfTheScroll.java
@@ -76,7 +76,7 @@ class MagusOfTheScrollEffect extends OneShotEffect {
                 }
                 revealed.add(card);
                 you.revealCards(sourceObject.getName(), revealed, game);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     Permanent creature = game.getPermanent(targetPointer.getFirst(game, source));
                     if (creature != null) {
                         creature.damage(2, source.getSourceId(), game, false, true);
diff --git a/Mage.Sets/src/mage/cards/p/PetraSphinx.java b/Mage.Sets/src/mage/cards/p/PetraSphinx.java
index 253d4e77f01..c97a792299e 100644
--- a/Mage.Sets/src/mage/cards/p/PetraSphinx.java
+++ b/Mage.Sets/src/mage/cards/p/PetraSphinx.java
@@ -78,7 +78,7 @@ class PetraSphinxEffect extends OneShotEffect {
                 if (card != null) {
                     Cards cards = new CardsImpl(card);
                     player.revealCards(source, cards, game);
-                    if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                    if (CardUtil.haveSameNames(card, cardName, game)) {
                         player.moveCards(cards, Zone.HAND, source, game);
                     } else {
                         player.moveCards(cards, Zone.GRAVEYARD, source, game);
diff --git a/Mage.Sets/src/mage/cards/p/Predict.java b/Mage.Sets/src/mage/cards/p/Predict.java
index 1f9ec4f9302..e4f98c5a954 100644
--- a/Mage.Sets/src/mage/cards/p/Predict.java
+++ b/Mage.Sets/src/mage/cards/p/Predict.java
@@ -67,7 +67,7 @@ class PredictEffect extends OneShotEffect {
             Card card = targetPlayer.getLibrary().getFromTop(game);
             if (card != null) {
                 controller.moveCards(card, Zone.GRAVEYARD, source, game);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     amount = 2;
                 }
             }
diff --git a/Mage.Sets/src/mage/cards/r/ReflectorMage.java b/Mage.Sets/src/mage/cards/r/ReflectorMage.java
index faabe8b4779..8de4580f253 100644
--- a/Mage.Sets/src/mage/cards/r/ReflectorMage.java
+++ b/Mage.Sets/src/mage/cards/r/ReflectorMage.java
@@ -119,7 +119,7 @@ class ExclusionRitualReplacementEffect extends ContinuousRuleModifyingEffectImpl
             if (spell != null && spell.isFaceDown(game)) {
                 return false; // Face Down cast spell (Morph creature) has no name
             }
-            return CardUtil.haveSameNames(card.getName(), creatureName) && Objects.equals(ownerId, card.getOwnerId());
+            return CardUtil.haveSameNames(card, creatureName, game) && Objects.equals(ownerId, card.getOwnerId());
         }
         return false;
     }
diff --git a/Mage.Sets/src/mage/cards/s/SearchTheCity.java b/Mage.Sets/src/mage/cards/s/SearchTheCity.java
index 57ad86e633e..0522121de16 100644
--- a/Mage.Sets/src/mage/cards/s/SearchTheCity.java
+++ b/Mage.Sets/src/mage/cards/s/SearchTheCity.java
@@ -157,7 +157,7 @@ class SearchTheCityExiledCardToHandEffect extends OneShotEffect {
         ExileZone searchTheCityExileZone = game.getExile().getExileZone(source.getSourceId());
         if (cardName != null && searchTheCityExileZone != null) {
             for (Card card : searchTheCityExileZone.getCards(game)) {
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     if (card.moveToZone(Zone.HAND, source.getSourceId(), game, true)) {
                         game.informPlayers("Search the City: put " + card.getName() + " into owner's hand");
                     }
diff --git a/Mage.Sets/src/mage/cards/s/SpoilsOfTheVault.java b/Mage.Sets/src/mage/cards/s/SpoilsOfTheVault.java
index 153bc570f73..3466f128b5d 100644
--- a/Mage.Sets/src/mage/cards/s/SpoilsOfTheVault.java
+++ b/Mage.Sets/src/mage/cards/s/SpoilsOfTheVault.java
@@ -68,7 +68,7 @@ class SpoilsOfTheVaultEffect extends OneShotEffect {
         for (Card card : controller.getLibrary().getCards(game)) {
             if (card != null) {
                 cardsToReveal.add(card);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     controller.moveCards(card, Zone.HAND, source, game);
                     break;
                 } else {
diff --git a/Mage.Sets/src/mage/cards/t/ThoughtHemorrhage.java b/Mage.Sets/src/mage/cards/t/ThoughtHemorrhage.java
index a4b9bee2e9d..7c10810ef06 100644
--- a/Mage.Sets/src/mage/cards/t/ThoughtHemorrhage.java
+++ b/Mage.Sets/src/mage/cards/t/ThoughtHemorrhage.java
@@ -86,7 +86,7 @@ class ThoughtHemorrhageEffect extends OneShotEffect {
                         + targetPlayer.getName(), targetPlayer.getHand(), game);
                 int cardsFound = 0;
                 for (Card card : targetPlayer.getHand().getCards(game)) {
-                    if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                    if (CardUtil.haveSameNames(card, cardName, game)) {
                         cardsFound++;
                     }
                 }
diff --git a/Mage.Sets/src/mage/cards/t/TunnelVision.java b/Mage.Sets/src/mage/cards/t/TunnelVision.java
index 33b58c266c4..ff1a97a640b 100644
--- a/Mage.Sets/src/mage/cards/t/TunnelVision.java
+++ b/Mage.Sets/src/mage/cards/t/TunnelVision.java
@@ -73,7 +73,7 @@ class TunnelVisionEffect extends OneShotEffect {
 
         for (Card card : targetPlayer.getLibrary().getCards(game)) {
             cardsToReveal.add(card);
-            if (CardUtil.haveSameNames(card.getName(), cardName)) {
+            if (CardUtil.haveSameNames(card, cardName, game)) {
                 namedCard = card;
                 break;
             }
diff --git a/Mage.Sets/src/mage/cards/v/VexingArcanix.java b/Mage.Sets/src/mage/cards/v/VexingArcanix.java
index 7a77fc4238a..742e51c56ae 100644
--- a/Mage.Sets/src/mage/cards/v/VexingArcanix.java
+++ b/Mage.Sets/src/mage/cards/v/VexingArcanix.java
@@ -74,7 +74,7 @@ class VexingArcanixEffect extends OneShotEffect {
             if (card != null) {
                 Cards cards = new CardsImpl(card);
                 player.revealCards(sourceObject.getIdName(), cards, game);
-                if (CardUtil.haveSameNames(card.getName(), cardName)) {
+                if (CardUtil.haveSameNames(card, cardName, game)) {
                     player.moveCards(cards, Zone.HAND, source, game);
                 } else {
                     player.moveCards(cards, Zone.GRAVEYARD, source, game);
diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/split/CastSplitCardsWithCostModificationTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/split/CastSplitCardsWithCostModificationTest.java
new file mode 100644
index 00000000000..ae6f1a97d64
--- /dev/null
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/split/CastSplitCardsWithCostModificationTest.java
@@ -0,0 +1,201 @@
+package org.mage.test.cards.split;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Ignore;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBase;
+
+/**
+ * @author JayDi85
+ */
+public class CastSplitCardsWithCostModificationTest extends CardTestPlayerBase {
+
+    @Test
+    public void test_CostReduction_Simple() {
+        // {2}{W}{U}
+        // As Council of the Absolute enters the battlefield, choose a noncreature, nonland card name.
+        // Your opponents can’t cast spells with the chosen name.
+        // Spells with the chosen name you cast cost {2} less to cast.
+        addCard(Zone.HAND, playerA, "Council of the Absolute", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 3);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        //
+        addCard(Zone.HAND, playerA, "Blastfire Bolt", 1); // {5}{R}, 5 damage
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 6 - 2); // -2 for cost reduction
+        addCard(Zone.BATTLEFIELD, playerB, "Balduvian Bears", 1);
+
+        // cast Council
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Council of the Absolute");
+        setChoice(playerA, "Blastfire Bolt");
+
+        // cast bolt
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Blastfire Bolt", "Balduvian Bears");
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+        assertAllCommandsUsed();
+
+        assertGraveyardCount(playerB, "Balduvian Bears", 1);
+    }
+
+    @Test
+    public void test_CostReduction_SplitLeft() {
+        // {2}{W}{U}
+        // As Council of the Absolute enters the battlefield, choose a noncreature, nonland card name.
+        // Your opponents can’t cast spells with the chosen name.
+        // Spells with the chosen name you cast cost {2} less to cast.
+        addCard(Zone.HAND, playerA, "Council of the Absolute", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 3);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        //
+        // Armed {1}{R} Target creature gets +1/+1 and gains double strike until end of turn.
+        // Dangerous {3}{G} All creatures able to block target creature this turn do so.
+        addCard(Zone.HAND, playerA, "Armed // Dangerous", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 2 - 1); // -1 from cost reduction
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 4 - 2); // check not working right cost reduction
+        addCard(Zone.BATTLEFIELD, playerA, "Balduvian Bears", 1);
+
+        // cast Council
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {W}", 3);
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {U}", 1);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Council of the Absolute");
+        setChoice(playerA, "Armed");
+
+        // cast Armed
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Armed", true);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Dangerous", false);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast fused Armed // Dangerous", false);
+        showAvaileableAbilities("after", 1, PhaseStep.PRECOMBAT_MAIN, playerA);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Armed", "Balduvian Bears");
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+        assertAllCommandsUsed();
+
+        assertGraveyardCount(playerA, "Armed // Dangerous", 1);
+    }
+
+    @Test
+    public void test_CostReduction_SplitRight() {
+        // {2}{W}{U}
+        // As Council of the Absolute enters the battlefield, choose a noncreature, nonland card name.
+        // Your opponents can’t cast spells with the chosen name.
+        // Spells with the chosen name you cast cost {2} less to cast.
+        addCard(Zone.HAND, playerA, "Council of the Absolute", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 3);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        //
+        // Armed {1}{R} Target creature gets +1/+1 and gains double strike until end of turn.
+        // Dangerous {3}{G} All creatures able to block target creature this turn do so.
+        addCard(Zone.HAND, playerA, "Armed // Dangerous", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 4 - 2); // -2 from cost reduction
+        addCard(Zone.BATTLEFIELD, playerA, "Balduvian Bears", 1);
+
+        // cast Council
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {W}", 3);
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {U}", 1);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Council of the Absolute");
+        setChoice(playerA, "Dangerous");
+
+        // cast Dangerous
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Armed", false);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Dangerous", true);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast fused Armed // Dangerous", false);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Dangerous", "Balduvian Bears");
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+        assertAllCommandsUsed();
+
+        assertGraveyardCount(playerA, "Armed // Dangerous", 1);
+    }
+
+    @Test
+    @Ignore // TODO: cost modification don't work for fused spells, only for one of the part, see https://github.com/magefree/mage/issues/6603
+    public void test_CostReduction_SplitFused_ReduceRight() {
+        // {2}{W}{U}
+        // As Council of the Absolute enters the battlefield, choose a noncreature, nonland card name.
+        // Your opponents can’t cast spells with the chosen name.
+        // Spells with the chosen name you cast cost {2} less to cast.
+        addCard(Zone.HAND, playerA, "Council of the Absolute", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 3);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        //
+        // Armed {1}{R} Target creature gets +1/+1 and gains double strike until end of turn.
+        // Dangerous {3}{G} All creatures able to block target creature this turn do so.
+        addCard(Zone.HAND, playerA, "Armed // Dangerous", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 2); // no cost reduction
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 4 - 2); // -2 from cost reduction
+        addCard(Zone.BATTLEFIELD, playerA, "Balduvian Bears", 1);
+
+        // cast Council
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {W}", 3);
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {U}", 1);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Council of the Absolute");
+        setChoice(playerA, "Dangerous");
+
+        // cast fused
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Armed", true);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Dangerous", true);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast fused Armed // Dangerous", true);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "fused Armed // Dangerous");
+        addTarget(playerA, "Balduvian Bears");
+        addTarget(playerA, "Balduvian Bears");
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+        assertAllCommandsUsed();
+
+        assertGraveyardCount(playerA, "Armed // Dangerous", 1);
+    }
+
+    @Test
+    @Ignore // TODO: cost modification don't work for fused spells, only for one of the part, see https://github.com/magefree/mage/issues/6603
+    public void test_CostReduction_SplitFused_ReduceLeft() {
+        // {2}{W}{U}
+        // As Council of the Absolute enters the battlefield, choose a noncreature, nonland card name.
+        // Your opponents can’t cast spells with the chosen name.
+        // Spells with the chosen name you cast cost {2} less to cast.
+        addCard(Zone.HAND, playerA, "Council of the Absolute", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 3);
+        addCard(Zone.BATTLEFIELD, playerA, "Island", 1);
+        //
+        // Armed {1}{R} Target creature gets +1/+1 and gains double strike until end of turn.
+        // Dangerous {3}{G} All creatures able to block target creature this turn do so.
+        addCard(Zone.HAND, playerA, "Armed // Dangerous", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Mountain", 2 - 1); // -1 from cost reduction
+        addCard(Zone.BATTLEFIELD, playerA, "Forest", 4 - 1); // -1 from cost reduction ON FUSED
+        addCard(Zone.BATTLEFIELD, playerA, "Balduvian Bears", 1);
+
+        // cast Council
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {W}", 3);
+        activateManaAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{T}: Add {U}", 1);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Council of the Absolute");
+        setChoice(playerA, "Armed");
+
+        // cast fused
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Armed", true);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Dangerous", true);
+        checkPlayableAbility("after reduction", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast fused Armed // Dangerous", true);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "fused Armed // Dangerous");
+        addTarget(playerA, "Balduvian Bears");
+        addTarget(playerA, "Balduvian Bears");
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+        assertAllCommandsUsed();
+
+        assertGraveyardCount(playerA, "Armed // Dangerous", 1);
+    }
+}
diff --git a/Mage.Tests/src/test/java/org/mage/test/testapi/TestAliases.java b/Mage.Tests/src/test/java/org/mage/test/testapi/TestAliases.java
index 25c5a66b225..1702f2f90ff 100644
--- a/Mage.Tests/src/test/java/org/mage/test/testapi/TestAliases.java
+++ b/Mage.Tests/src/test/java/org/mage/test/testapi/TestAliases.java
@@ -1,5 +1,7 @@
 package org.mage.test.testapi;
 
+import mage.cards.Card;
+import mage.cards.repository.CardRepository;
 import mage.constants.EmptyNames;
 import mage.constants.PhaseStep;
 import mage.constants.Zone;
@@ -44,6 +46,18 @@ public class TestAliases extends CardTestPlayerBase {
         Assert.assertFalse(CardUtil.haveSameNames("Name", "123", true));
         Assert.assertFalse(CardUtil.haveSameNames("Name", EmptyNames.FACE_DOWN_CREATURE.toString(), true));
         Assert.assertFalse(CardUtil.haveSameNames("Name1", "Name2", true));
+
+        // name with split card
+        Card splitCard1 = CardRepository.instance.findCard("Armed // Dangerous").getCard();
+        Card splitCard2 = CardRepository.instance.findCard("Alive // Well").getCard();
+        Assert.assertTrue(CardUtil.haveSameNames(splitCard1, "Armed", currentGame));
+        Assert.assertTrue(CardUtil.haveSameNames(splitCard1, "Dangerous", currentGame));
+        Assert.assertTrue(CardUtil.haveSameNames(splitCard1, "Armed // Dangerous", currentGame));
+        Assert.assertTrue(CardUtil.haveSameNames(splitCard1, splitCard1));
+        Assert.assertFalse(CardUtil.haveSameNames(splitCard1, "Other", currentGame));
+        Assert.assertFalse(CardUtil.haveSameNames(splitCard1, "Other // Dangerous", currentGame));
+        Assert.assertFalse(CardUtil.haveSameNames(splitCard1, "Armed // Other", currentGame));
+        Assert.assertFalse(CardUtil.haveSameNames(splitCard1, splitCard2));
     }
 
     @Test
diff --git a/Mage/src/main/java/mage/filter/predicate/mageobject/NamePredicate.java b/Mage/src/main/java/mage/filter/predicate/mageobject/NamePredicate.java
index b80f7766a70..bc266d2718f 100644
--- a/Mage/src/main/java/mage/filter/predicate/mageobject/NamePredicate.java
+++ b/Mage/src/main/java/mage/filter/predicate/mageobject/NamePredicate.java
@@ -31,11 +31,13 @@ public class NamePredicate implements Predicate<MageObject> {
         // A split card has the chosen name if one of its two names matches the chosen name.
         if (input instanceof SplitCard) {
             return CardUtil.haveSameNames(name, ((SplitCard) input).getLeftHalfCard().getName(), this.ignoreMtgRuleForEmptyNames) ||
-                    CardUtil.haveSameNames(name, ((SplitCard) input).getRightHalfCard().getName(), this.ignoreMtgRuleForEmptyNames);
+                    CardUtil.haveSameNames(name, ((SplitCard) input).getRightHalfCard().getName(), this.ignoreMtgRuleForEmptyNames) ||
+                    CardUtil.haveSameNames(name, input.getName(), this.ignoreMtgRuleForEmptyNames);
         } else if (input instanceof Spell && ((Spell) input).getSpellAbility().getSpellAbilityType() == SpellAbilityType.SPLIT_FUSED) {
             SplitCard card = (SplitCard) ((Spell) input).getCard();
             return CardUtil.haveSameNames(name, card.getLeftHalfCard().getName(), this.ignoreMtgRuleForEmptyNames) ||
-                    CardUtil.haveSameNames(name, card.getRightHalfCard().getName(), this.ignoreMtgRuleForEmptyNames);
+                    CardUtil.haveSameNames(name, card.getRightHalfCard().getName(), this.ignoreMtgRuleForEmptyNames) ||
+                    CardUtil.haveSameNames(name, card.getName(), this.ignoreMtgRuleForEmptyNames);
         } else {
             if (name.contains(" // ")) {
                 String leftName = name.substring(0, name.indexOf(" // "));
diff --git a/Mage/src/main/java/mage/util/CardUtil.java b/Mage/src/main/java/mage/util/CardUtil.java
index 99022d44aef..b418ad2fd8a 100644
--- a/Mage/src/main/java/mage/util/CardUtil.java
+++ b/Mage/src/main/java/mage/util/CardUtil.java
@@ -11,6 +11,7 @@ import mage.constants.ColoredManaSymbol;
 import mage.constants.EmptyNames;
 import mage.constants.ManaType;
 import mage.filter.Filter;
+import mage.filter.predicate.mageobject.NamePredicate;
 import mage.game.CardState;
 import mage.game.Game;
 import mage.game.permanent.Permanent;
@@ -657,6 +658,14 @@ public final class CardUtil {
         return object1 != null && object2 != null && haveSameNames(object1.getName(), object2.getName());
     }
 
+    public static boolean haveSameNames(MageObject object, String needName, Game game) {
+        return containsName(object, needName, game);
+    }
+
+    public static boolean containsName(MageObject object, String name, Game game) {
+        return new NamePredicate(name).apply(object, game);
+    }
+
     public static boolean haveEmptyName(String name) {
         return name == null || name.isEmpty() || name.equals(EmptyNames.FACE_DOWN_CREATURE.toString()) || name.equals(EmptyNames.FACE_DOWN_TOKEN.toString());
     }