diff --git a/src/main/java/forge/card/abilityFactory/AbilityFactory_Counters.java b/src/main/java/forge/card/abilityFactory/AbilityFactory_Counters.java
index 257e50b1ee9..db5ccd6803a 100644
--- a/src/main/java/forge/card/abilityFactory/AbilityFactory_Counters.java
+++ b/src/main/java/forge/card/abilityFactory/AbilityFactory_Counters.java
@@ -242,7 +242,7 @@ public class AbilityFactory_Counters {
                 return false;
             }
 
-            if (CostUtil.checkCreatureSacrificeCost(abCost, source)) {
+            if (!CostUtil.checkCreatureSacrificeCost(abCost, source)) {
                 return false;
             }
 
diff --git a/src/main/java/forge/card/abilityFactory/AbilityFactory_Regenerate.java b/src/main/java/forge/card/abilityFactory/AbilityFactory_Regenerate.java
index 81793d24b79..006478da82c 100644
--- a/src/main/java/forge/card/abilityFactory/AbilityFactory_Regenerate.java
+++ b/src/main/java/forge/card/abilityFactory/AbilityFactory_Regenerate.java
@@ -191,7 +191,7 @@ public class AbilityFactory_Regenerate {
             if (!CostUtil.checkSacrificeCost(abCost, hostCard))
                 return false;
                 
-            if (CostUtil.checkCreatureSacrificeCost(abCost, hostCard))
+            if (!CostUtil.checkCreatureSacrificeCost(abCost, hostCard))
                 return false;
         }
 
@@ -551,7 +551,7 @@ public class AbilityFactory_Regenerate {
             if (!CostUtil.checkSacrificeCost(abCost, hostCard))
                 return false;
             
-            if (CostUtil.checkCreatureSacrificeCost(abCost, hostCard))
+            if (!CostUtil.checkCreatureSacrificeCost(abCost, hostCard))
                 return false;
             
             if (!CostUtil.checkLifeCost(abCost, hostCard, 4))
diff --git a/src/main/java/forge/card/abilityFactory/AbilityFactory_ZoneAffecting.java b/src/main/java/forge/card/abilityFactory/AbilityFactory_ZoneAffecting.java
index 24e3b0c6b02..8dd40eb7d71 100644
--- a/src/main/java/forge/card/abilityFactory/AbilityFactory_ZoneAffecting.java
+++ b/src/main/java/forge/card/abilityFactory/AbilityFactory_ZoneAffecting.java
@@ -194,7 +194,7 @@ public class AbilityFactory_ZoneAffecting {
 
         if (abCost != null) {
             // AI currently disabled for these costs
-            if (CostUtil.checkCreatureSacrificeCost(abCost, source))
+            if (!CostUtil.checkCreatureSacrificeCost(abCost, source))
                 return false;
             
             if (!CostUtil.checkLifeCost(abCost, source, 4))