diff --git a/forge-game/src/main/java/forge/game/ForgeScript.java b/forge-game/src/main/java/forge/game/ForgeScript.java
index 8cc37fb3987..fd84a49f73a 100644
--- a/forge-game/src/main/java/forge/game/ForgeScript.java
+++ b/forge-game/src/main/java/forge/game/ForgeScript.java
@@ -7,6 +7,7 @@ import forge.game.card.Card;
 import forge.game.card.CardState;
 import forge.game.player.Player;
 import forge.game.spellability.SpellAbility;
+import forge.game.staticability.StaticAbility;
 import forge.util.Expressions;
 
 public class ForgeScript {
@@ -179,6 +180,14 @@ public class ForgeScript {
             if (!sa.hasParam("Equip")) {
                 return false;
             }
+        } else if (property.equals("MayPlaySource")) {
+            StaticAbility m = sa.getMayPlay();
+            if (m == null) {
+                return false;
+            }
+            if (!source.equals(m.getHostCard())) {
+                return false;
+            }
         } else if (property.startsWith("IsTargeting")) {
             String k[] = property.split(" ", 2);
             boolean found = false;
diff --git a/forge-game/src/main/java/forge/game/card/CardProperty.java b/forge-game/src/main/java/forge/game/card/CardProperty.java
index 3a95cccc72a..8b39dcefe78 100644
--- a/forge-game/src/main/java/forge/game/card/CardProperty.java
+++ b/forge-game/src/main/java/forge/game/card/CardProperty.java
@@ -1683,6 +1683,15 @@ public class CardProperty {
             if (card.hasCounters()) {
                 return false;
             }
+        } else if (property.startsWith("CastSa"))  {
+            SpellAbility castSA = card.getCastSA();
+            if (castSA == null) {
+                return false;
+            }
+            String v = property.substring(7);
+            if (!castSA.isValid(v, sourceController, source, spellAbility)) {
+                return false;
+            }
         } else if (property.equals("wasCast")) {
             if (null == card.getCastFrom()) {
                 return false;
diff --git a/forge-gui/res/cardsfolder/b/bosium_strip.txt b/forge-gui/res/cardsfolder/b/bosium_strip.txt
index 938e8af077f..fc07fa5c43e 100644
--- a/forge-gui/res/cardsfolder/b/bosium_strip.txt
+++ b/forge-gui/res/cardsfolder/b/bosium_strip.txt
@@ -1,16 +1,10 @@
 Name:Bosium Strip
 ManaCost:3
 Types:Artifact
-A:AB$ Effect | Cost$ 3 T | Triggers$ TrigBosiumStrip1,TrigBosiumStrip2 | ReplacementEffects$ REBosiumStrip | StaticAbilities$ STBosiumStrip | SVars$ RememberCastFromGrave,MoveExile,DBCleanup | RememberObjects$ TriggeredCard | SpellDescription$ Until end of turn, if the top card of your graveyard is an instant or sorcery card, you may cast that card. If a card cast this way would be put into a graveyard this turn, exile it instead.
+A:AB$ Effect | Cost$ 3 T | ReplacementEffects$ REBosiumStrip | StaticAbilities$ STBosiumStrip | SVars$ MoveExile | SpellDescription$ Until end of turn, if the top card of your graveyard is an instant or sorcery card, you may cast that card. If a card cast this way would be put into a graveyard this turn, exile it instead.
 SVar:STBosiumStrip:Mode$ Continuous | Affected$ Card.TopGraveyard+Instant+YouCtrl,Card.TopGraveyard+Sorcery+YouCtrl | MayPlay$ True | EffectZone$ Command | AffectedZone$ Graveyard | Description$ Until end of turn, if the top card of your graveyard is an instant or sorcery card, you may cast that card. If a card cast this way would be put into a graveyard this turn, exile it instead.
-SVar:TrigBosiumStrip1:Mode$ ChangesZone | ValidCard$ Card.Instant+YouCtrl,Card.Sorcery+YouCtrl | Origin$ Graveyard | Destination$ Stack | TriggerZones$ Command | Execute$ RememberCastFromGrave | Static$ True
-SVar:TrigBosiumStrip2:Mode$ ChangesZone | ValidCard$ Instant.YouCtrl+IsRemembered,Sorcery.YouCtrl+IsRemembered | Origin$ Stack | Destination$ Hand,Library,Exile | TriggerZones$ Command | Execute$ DBCleanup | Static$ True
-SVar:RememberCastFromGrave:DB$ Pump | RememberObjects$ TriggeredCard
-# TODO: find a better way to check "card cast this way" to interact properly with other cards that allow you to cast cards from graveyard
-# but not exile them (also relevant for Kess, Dissident Mage)
-SVar:REBosiumStrip:Event$ Moved | ActiveZones$ Command | ValidCard$ Instant.YouCtrl+IsRemembered,Sorcery.YouCtrl+IsRemembered | Origin$ Stack | Destination$ Graveyard | ReplaceWith$ MoveExile
-SVar:MoveExile:DB$ ChangeZone | Defined$ ReplacedCard | Origin$ Stack | Destination$ Exile | SubAbility$ DBCleanup
-SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
+SVar:REBosiumStrip:Event$ Moved | ValidCard$ Card.CastSa Spell.MayPlaySource | Origin$ Stack | Destination$ Graveyard | ReplaceWith$ MoveExile
+SVar:MoveExile:DB$ ChangeZone | Defined$ ReplacedCard | Origin$ Stack | Destination$ Exile
 SVar:NeedsOrderedGraveyard:TRUE
 SVar:RemAIDeck:True
 SVar:Picture:http://www.wizards.com/global/images/magic/general/bosium_strip.jpg
diff --git a/forge-gui/res/cardsfolder/k/kess_dissident_mage.txt b/forge-gui/res/cardsfolder/k/kess_dissident_mage.txt
index d99a34c218e..9330ded81c2 100644
--- a/forge-gui/res/cardsfolder/k/kess_dissident_mage.txt
+++ b/forge-gui/res/cardsfolder/k/kess_dissident_mage.txt
@@ -4,13 +4,7 @@ Types:Legendary Creature Human Wizard
 PT:3/4
 K:Flying
 S:Mode$ Continuous | Affected$ Instant.YouCtrl,Sorcery.YouCtrl | Condition$ PlayerTurn | MayPlay$ True | MayPlayLimit$ 1 | EffectZone$ Battlefield | AffectedZone$ Graveyard | Description$ During each of your turns, you may cast an instant or sorcery card from your graveyard. If a card cast this way would be put into your graveyard this turn, exile it instead.
-T:Mode$ ChangesZone | ValidCard$ Instant.YouCtrl,Sorcery.YouCtrl | Origin$ Graveyard | Destination$ Stack | TriggerZones$ Battlefield | Execute$ RememberCastFromGrave | Static$ True
-T:Mode$ ChangesZone | ValidCard$ Instant.YouCtrl+IsRemembered,Sorcery.YouCtrl+IsRemembered | Origin$ Stack | Destination$ Hand,Library,Exile | TriggerZones$ Battlefield | Execute$ DBCleanup | Static$ True
-SVar:RememberCastFromGrave:DB$ Pump | RememberObjects$ TriggeredCard
-# TODO: find a better way to check "card cast this way" to interact properly with other cards that allow you to cast cards from graveyard
-# but not exile them (also relevant for Bosium Strip)
-R:Event$ Moved | ValidCard$ Instant.YouCtrl+IsRemembered,Sorcery.YouCtrl+IsRemembered | Origin$ Stack | Destination$ Graveyard | ReplaceWith$ MoveExile
-SVar:MoveExile:DB$ ChangeZone | Defined$ ReplacedCard | Origin$ Stack | Destination$ Exile | SubAbility$ DBCleanup
-SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
+R:Event$ Moved | ValidCard$ Card.CastSa Spell.MayPlaySource | Origin$ Stack | Destination$ Graveyard | ReplaceWith$ MoveExile
+SVar:MoveExile:DB$ ChangeZone | Defined$ ReplacedCard | Origin$ Stack | Destination$ Exile
 SVar:Picture:http://www.wizards.com/global/images/magic/general/kess_dissident_mage.jpg
 Oracle:Flying\nDuring each of your turns, you may cast an instant or sorcery card from your graveyard. If a card cast this way would be put into your graveyard this turn, exile it instead.