diff --git a/projects/mtg/bin/daily_build/template.exe b/projects/mtg/bin/daily_build/template.exe
index a71691cb2..efc526403 100644
Binary files a/projects/mtg/bin/daily_build/template.exe and b/projects/mtg/bin/daily_build/template.exe differ
diff --git a/projects/mtg/include/AllAbilities.h b/projects/mtg/include/AllAbilities.h
index b08a4d1c1..367003827 100644
--- a/projects/mtg/include/AllAbilities.h
+++ b/projects/mtg/include/AllAbilities.h
@@ -400,6 +400,9 @@ class GenericActivatedAbility:public ActivatedAbility, public NestedAbility{
 
   int resolve(){
     counters++;
+    SAFE_DELETE(ability->cost);
+    ability->cost = abilityCost->Diff(cost);
+    SAFE_DELETE(abilityCost);
     ability->target = target; //may have been updated...
     if (ability) return ability->resolve();
     return 0;
@@ -1896,7 +1899,14 @@ public:
 
   int resolve(){
     //TODO check if ability is oneShot ?
-    if (td->match(source) > 0){
+    int match;
+    if (!td->compareAbility){
+      match = td->match(source);
+    }else{
+      match = td->match(this);
+    }
+
+    if (match){
       addAbilityToGame();
     }else{
       removeAbilityFromGame();
@@ -1961,7 +1971,12 @@ class AThisForEach:public MTGAbility, public NestedAbility{
 
   int resolve(){
     //TODO check if ability is oneShot ?
-    int matches = td->match(source);
+    int matches;
+    if (!td->compareAbility){
+      matches = td->match(source);
+    }else{
+      matches = td->match(this);
+    }
     if (matches > 0) {
       if (abilities.size()){     
         removeAbilityFromGame();
diff --git a/projects/mtg/include/CardPrimitive.h b/projects/mtg/include/CardPrimitive.h
index 86f6d4e59..685b3234c 100644
--- a/projects/mtg/include/CardPrimitive.h
+++ b/projects/mtg/include/CardPrimitive.h
@@ -12,12 +12,12 @@ using namespace std;
 
 class CardPrimitive {
  protected:
-  ManaCost manaCost;
   vector<string> ftdText;
   int init();
   string lcname;
 
  public:
+  ManaCost manaCost;
   string text;
   string name;
 
diff --git a/projects/mtg/include/MTGAbility.h b/projects/mtg/include/MTGAbility.h
index b94bd9528..e6947cbe5 100644
--- a/projects/mtg/include/MTGAbility.h
+++ b/projects/mtg/include/MTGAbility.h
@@ -158,9 +158,11 @@ class ActivatedAbility:public MTGAbility{
     CLEANUP = 56,
     AFTER_EOT = 57,
    };
+   ManaCost * abilityCost;
   int restrictions;
   int needsTapping;
   ActivatedAbility(int id, MTGCardInstance * card,ManaCost * _cost = NULL, int _restrictions = NO_RESTRICTION,int tap = 1);
+  virtual ~ActivatedAbility();
   virtual int reactToClick(MTGCardInstance * card);
   virtual int isReactingToClick(MTGCardInstance * card, ManaCost * mana = NULL);
   virtual int reactToTargetClick(Targetable * object);
diff --git a/projects/mtg/include/ThisDescriptor.h b/projects/mtg/include/ThisDescriptor.h
index 007f8fdeb..0fe38b57d 100644
--- a/projects/mtg/include/ThisDescriptor.h
+++ b/projects/mtg/include/ThisDescriptor.h
@@ -12,9 +12,11 @@
 
 class ThisDescriptor{
  public:
+   int compareAbility;
    int comparisonMode;
    int comparisonCriterion;
    virtual int match(MTGCardInstance * card) = 0;
+   virtual int match(MTGAbility * ability) = 0;
    int matchValue(int value);  
 };
 
@@ -27,6 +29,7 @@ class ThisCounter:public ThisDescriptor{
  public:
   Counter * counter;
   virtual int match(MTGCardInstance * card);
+  virtual int match(MTGAbility * ability) {return 0;};
   ThisCounter(Counter * _counter);
   ThisCounter(int power, int toughness, int nb, const char * name);
   ~ThisCounter();
@@ -35,19 +38,29 @@ class ThisCounter:public ThisDescriptor{
 class ThisCounterAny:public ThisDescriptor{
  public:
   virtual int match(MTGCardInstance *card);
+  virtual int match(MTGAbility * ability) {return 0;};
   ThisCounterAny(int nb);
 };
 
 class ThisPower:public ThisDescriptor{
  public:
     virtual int match(MTGCardInstance * card);
+    virtual int match(MTGAbility * ability) {return 0;};
     ThisPower(int power);
 };
 
 class ThisToughness:public ThisDescriptor{
  public:
     virtual int match(MTGCardInstance * card);
+    virtual int match(MTGAbility * ability) {return 0;};
     ThisToughness(int toughness);
 };
 
+class ThisX:public ThisDescriptor{
+  public:
+    virtual int match(MTGAbility * ability);
+    virtual int match(MTGCardInstance * card) {return 0;};
+    ThisX(int x);
+};
+
 #endif
\ No newline at end of file
diff --git a/projects/mtg/src/MTGAbility.cpp b/projects/mtg/src/MTGAbility.cpp
index 578ac0c46..ccf0176c2 100644
--- a/projects/mtg/src/MTGAbility.cpp
+++ b/projects/mtg/src/MTGAbility.cpp
@@ -1813,6 +1813,7 @@ NestedAbility::NestedAbility(MTGAbility * _ability){
 
 ActivatedAbility::ActivatedAbility(int id, MTGCardInstance * card, ManaCost * _cost, int restrictions,int tap):MTGAbility(id,card), restrictions(restrictions), needsTapping(tap){
   cost = _cost;
+  abilityCost = 0;
 }
 
 
@@ -1856,13 +1857,17 @@ int ActivatedAbility::isReactingToClick(MTGCardInstance * card, ManaCost * mana)
 int ActivatedAbility::reactToClick(MTGCardInstance * card){
 //  if (cost) cost->setExtraCostsAction(this, card);
   if (!isReactingToClick(card)) return 0;
+  Player * player = game->currentlyActing();
   if (cost){
     if (!cost->isExtraPaymentSet()){
       game->waitForExtraPayment = cost->extraCosts;
       return 0;
     }
+    ManaCost * previousManaPool = NEW ManaCost(player->getManaPool());
     game->currentlyActing()->getManaPool()->pay(cost);
     cost->doPayExtra();
+    abilityCost = previousManaPool->Diff(player->getManaPool());
+    delete previousManaPool;
   }
   if (needsTapping && source->isInPlay()) source->tap();
   fireAbility();
@@ -1873,14 +1878,18 @@ int ActivatedAbility::reactToClick(MTGCardInstance * card){
 
 int ActivatedAbility::reactToTargetClick(Targetable * object){
   if (!isReactingToTargetClick(object)) return 0;
+  Player * player = game->currentlyActing();
   if (cost){
     if (object->typeAsTarget() == TARGET_CARD) cost->setExtraCostsAction(this, (MTGCardInstance *) object);
     if (!cost->isExtraPaymentSet()){
       game->waitForExtraPayment = cost->extraCosts;
       return 0;
     }
+    ManaCost * previousManaPool = NEW ManaCost(player->getManaPool());
     game->currentlyActing()->getManaPool()->pay(cost);
     cost->doPayExtra();
+    abilityCost = previousManaPool->Diff(player->getManaPool());
+    delete previousManaPool;
   }
   if (needsTapping  && source->isInPlay()) source->tap();
   fireAbility();
@@ -1888,6 +1897,12 @@ int ActivatedAbility::reactToTargetClick(Targetable * object){
 
 }
 
+ActivatedAbility::~ActivatedAbility(){
+  if (!isClone){
+    SAFE_DELETE(abilityCost);
+  }
+}
+
 ostream& ActivatedAbility::toString(ostream& out) const
 {
   out << "ActivatedAbility ::: restrictions : " << restrictions
diff --git a/projects/mtg/src/ThisDescriptor.cpp b/projects/mtg/src/ThisDescriptor.cpp
index 7265259b0..316c534df 100644
--- a/projects/mtg/src/ThisDescriptor.cpp
+++ b/projects/mtg/src/ThisDescriptor.cpp
@@ -144,15 +144,28 @@ ThisDescriptor * ThisDescriptorFactory::createThisDescriptor(string s){
     return NULL;
   }
 
+  // X
+  found = s.find("x");
+  if (found != string::npos) {
+    ThisX * td = NEW ThisX(criterion);
+    if (td){
+      td->comparisonMode = mode;
+      return td;
+    }
+    return NULL;
+  }
+
   return NULL;
 }
 
 ThisCounter::ThisCounter(Counter * _counter){
+  compareAbility = 0;
   counter = _counter;
   comparisonCriterion = counter->nb;
 }
 
 ThisCounter::ThisCounter(int power, int toughness, int nb, const char * name){
+  compareAbility = 0;
   counter = NEW Counter(NULL,name,power,toughness);
   comparisonCriterion = nb;
 }
@@ -184,6 +197,7 @@ ThisCounter::~ThisCounter() {
 }
 
 ThisPower::ThisPower(int power){
+  compareAbility = 0;
   comparisonCriterion = power;
 }
 
@@ -192,6 +206,7 @@ int ThisPower::match(MTGCardInstance * card){
 }
 
 ThisToughness::ThisToughness(int toughness){
+  compareAbility = 0;
   comparisonCriterion = toughness;
 }
 
@@ -200,6 +215,7 @@ int ThisToughness::match(MTGCardInstance * card){
 }
 
 ThisCounterAny::ThisCounterAny(int nb){
+  compareAbility = 0;
   comparisonCriterion = nb;
 }
 
@@ -209,4 +225,13 @@ int ThisCounterAny::match(MTGCardInstance * card){
     result += card->counters->counters[i]->nb;
   }
   return matchValue(result);
+}
+
+ThisX::ThisX(int x){
+  comparisonCriterion = x;
+  compareAbility = 1;
+}
+
+int ThisX::match(MTGAbility * ability){
+  return matchValue(ability->cost->hasX());
 }
\ No newline at end of file