diff --git a/projects/mtg/bin/Res/sets/10E/_cards.dat b/projects/mtg/bin/Res/sets/10E/_cards.dat
index 3443a6073..55faafecf 100644
--- a/projects/mtg/bin/Res/sets/10E/_cards.dat
+++ b/projects/mtg/bin/Res/sets/10E/_cards.dat
@@ -1216,6 +1216,19 @@ type=Artifact
 mana={4}
 [/card]
 [card]
+text=Juggernaut attacks each turn if able. Juggernaut can't be blocked by Walls.
+auto=cantbeblockedby(wall)
+abilities=mustattack
+id=135240
+name=Juggernaut
+rarity=U
+type=Artifact Creature
+mana={4}
+power=5
+subtype=Juggernaut
+toughness=3
+[/card]
+[card]
 text=Haste (This creature can attack and {T} as soon as it comes under your control.)  {T}: Kamahl, Pit Fighter deals 3 damage to target creature or player.
 abilities=haste,legendary
 auto={T}:Damage:3 target(creature,player)
diff --git a/projects/mtg/bin/Res/sets/10E/todo.dat b/projects/mtg/bin/Res/sets/10E/todo.dat
index 0da577c1a..d99156776 100644
--- a/projects/mtg/bin/Res/sets/10E/todo.dat
+++ b/projects/mtg/bin/Res/sets/10E/todo.dat
@@ -486,20 +486,6 @@ type=Instant
 mana={1}{R}
 [/card]
 [card]
-text=Juggernaut attacks each turn if able. Juggernaut can't be blocked by Walls.
-id=135240
-name=Juggernaut
-rarity=U
-color=Artifact
-type=Artifact Creature
-mana={4}
-power=5
-abilities=mustattack
-auto=cantbeblockedby(wall)
-subtype=Juggernaut
-toughness=3
-[/card]
-[card]
 text=Karplusan Strider can't be the target of blue or black spells.
 id=129911
 name=Karplusan Strider
diff --git a/projects/mtg/bin/Res/sets/DIS/_cards.dat b/projects/mtg/bin/Res/sets/DIS/_cards.dat
index c08ee321d..c950ce685 100644
--- a/projects/mtg/bin/Res/sets/DIS/_cards.dat
+++ b/projects/mtg/bin/Res/sets/DIS/_cards.dat
@@ -110,6 +110,18 @@ toughness=9
 abilities=trample
 [/card]
 [card]
+id=107526
+name=Gnat Alley Creeper
+mana={2}{R}
+type=Creature
+subtype=Human Rogue
+power=3
+toughness=1
+text=Gnat Alley Creeper can't be blocked by creatures with flying.
+auto=cantbeblockedby(creature[flying])
+rarity=U
+[/card]
+[card]
 text={T}, Sacrifice Haazda Exonerator: Destroy target Aura.
 id=107467
 name=Haazda Exonerator
diff --git a/projects/mtg/bin/Res/sets/DIS/todo.dat b/projects/mtg/bin/Res/sets/DIS/todo.dat
index 434641527..1587c6efa 100644
--- a/projects/mtg/bin/Res/sets/DIS/todo.dat
+++ b/projects/mtg/bin/Res/sets/DIS/todo.dat
@@ -1,6 +1,6 @@
 [card]
 id=111192
-name=ÁEhermage's Touch
+name=AEthermage's Touch
 mana={2}{W}{U}
 type=Instant
 text=Reveal the top four cards of your library. You may put a creature card from among them onto the battlefield. It has "At the beginning of your end step, return this creature to its owner's hand." Then put the rest of the cards revealed this way on the bottom of your library in any order.
@@ -468,17 +468,6 @@ text={T}: Add {1} to your mana pool. {T}, Sacrifice Ghost Quarter: Destroy targe
 rarity=U
 [/card]
 [card]
-id=107526
-name=Gnat Alley Creeper
-mana={2}{R}
-type=Creature
-subtype=Human Rogue
-power=3
-toughness=1
-text=Gnat Alley Creeper can't be blocked by creatures with flying.
-rarity=U
-[/card]
-[card]
 id=107542
 name=Gobhobbler Rats
 mana={B}{R}
diff --git a/projects/mtg/bin/Res/sets/DRK/_cards.dat b/projects/mtg/bin/Res/sets/DRK/_cards.dat
index f3eec2243..7b657f3b6 100644
--- a/projects/mtg/bin/Res/sets/DRK/_cards.dat
+++ b/projects/mtg/bin/Res/sets/DRK/_cards.dat
@@ -522,6 +522,15 @@ mana={0}
 type=Artifact
 [/card]
 [card]
+id=1725
+name=Tower of Coireall
+mana={2}
+type=Artifact
+text={T}: Target creature can't be blocked by Walls this turn.
+auto={T}:cantbeblockedby(wall) target(creature)
+rarity=U
+[/card]
+[card]
 text=Water Wurm gets +0/+1 as long as an opponent controls an Island.
 id=1764
 name=Water Wurm
diff --git a/projects/mtg/bin/Res/sets/DRK/todo.dat b/projects/mtg/bin/Res/sets/DRK/todo.dat
index cc5174065..063240478 100644
--- a/projects/mtg/bin/Res/sets/DRK/todo.dat
+++ b/projects/mtg/bin/Res/sets/DRK/todo.dat
@@ -553,14 +553,6 @@ text=At the beginning of your upkeep, The Fallen deals 1 damage to each opponent
 rarity=U
 [/card]
 [card]
-id=1725
-name=Tower of Coireall
-mana={2}
-type=Artifact
-text={T}: Target creature can't be blocked by Walls this turn.
-rarity=U
-[/card]
-[card]
 id=1779
 name=Tracker
 mana={2}{G}
diff --git a/projects/mtg/bin/Res/sets/DST/_cards.dat b/projects/mtg/bin/Res/sets/DST/_cards.dat
index 40b99755f..34e2ea0df 100644
--- a/projects/mtg/bin/Res/sets/DST/_cards.dat
+++ b/projects/mtg/bin/Res/sets/DST/_cards.dat
@@ -231,10 +231,7 @@ subtype=Juggernaut
 power=5
 toughness=3
 text=Juggernaut attacks each turn if able. Juggernaut can't be blocked by Walls.
-# Following line is not entirely correct: Walls cannot target
-# Juggernaut although they should be able to. But it's hard to
-# find a case where this difference actually matters.
-auto=protection from(wall)
+auto=cantbeblockedby(wall)
 abilities=mustattack
 rarity=U
 [/card]
diff --git a/projects/mtg/bin/Res/sets/PLC/_cards.dat b/projects/mtg/bin/Res/sets/PLC/_cards.dat
index 158c8f0ae..e22b89bc3 100644
--- a/projects/mtg/bin/Res/sets/PLC/_cards.dat
+++ b/projects/mtg/bin/Res/sets/PLC/_cards.dat
@@ -133,6 +133,18 @@ power=2
 toughness=2
 [/card]
 [card]
+id=110501
+name=Dust Corona
+mana={R}
+type=Enchantment
+subtype=Aura
+text=Enchant creature -- Enchanted creature gets +2/+0 and can't be blocked by creatures with flying.
+target=creature
+auto=2/0
+auto=cantbeblockedby(creatures[flying])
+rarity=C
+[/card]
+[card]
 text=Enchant creature You control enchanted creature. At the beginning of your upkeep, enchanted creature deals 1 damage to its owner.
 target=creature
 auto=@each my upkeep:life:-1 opponent
diff --git a/projects/mtg/bin/Res/sets/PLC/todo.dat b/projects/mtg/bin/Res/sets/PLC/todo.dat
index b7f81adda..0a0efae65 100644
--- a/projects/mtg/bin/Res/sets/PLC/todo.dat
+++ b/projects/mtg/bin/Res/sets/PLC/todo.dat
@@ -11,7 +11,7 @@ rarity=R
 [/card]
 [card]
 id=124504
-name=ÁEher Membrane
+name=AEther Membrane
 mana={1}{R}{R}
 type=Creature
 subtype=Wall
@@ -278,15 +278,6 @@ text=Protection from green At the beginning of the end step, if Dunerider Outlaw
 rarity=U
 [/card]
 [card]
-id=110501
-name=Dust Corona
-mana={R}
-type=Enchantment
-subtype=Aura
-text=Enchant creature Enchanted creature gets +2/+0 and can't be blocked by creatures with flying.
-rarity=C
-[/card]
-[card]
 id=124343
 name=Dust Elemental
 mana={2}{W}{W}
diff --git a/projects/mtg/bin/Res/sets/RV/_cards.dat b/projects/mtg/bin/Res/sets/RV/_cards.dat
index 36a702c5a..6310c9e7f 100644
--- a/projects/mtg/bin/Res/sets/RV/_cards.dat
+++ b/projects/mtg/bin/Res/sets/RV/_cards.dat
@@ -1189,6 +1189,19 @@ mana={4}
 type=Artifact
 [/card]
 [card]
+text=Juggernaut attacks each turn if able.     Juggernaut can't be blocked by Walls.
+auto=cantbeblockedby(wall)
+abilities=mustattack
+id=1120
+name=Juggernaut
+rarity=U
+type=Artifact Creature
+mana={4}
+power=5
+subtype=Juggernaut
+toughness=3
+[/card]
+[card]
 text=Target creature gains flying until end of turn.
 target=creature
 auto=flying
diff --git a/projects/mtg/bin/Res/sets/RV/todo.dat b/projects/mtg/bin/Res/sets/RV/todo.dat
index 173102a02..75f5e37c0 100644
--- a/projects/mtg/bin/Res/sets/RV/todo.dat
+++ b/projects/mtg/bin/Res/sets/RV/todo.dat
@@ -195,18 +195,6 @@ type=Artifact
 mana={4}
 [/card]
 [card]
-text=Juggernaut attacks each turn if able.     Juggernaut can't be blocked by Walls.
-id=1120
-name=Juggernaut
-rarity=U
-color=Artifact
-type=Artifact Creature
-mana={4}
-power=5
-subtype=Juggernaut
-toughness=3
-[/card]
-[card]
 text=You have no maximum hand size.     If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.
 id=1122
 name=Library of Leng
diff --git a/projects/mtg/bin/Res/test/_tests.txt b/projects/mtg/bin/Res/test/_tests.txt
index caebbcc33..3b49ea58e 100644
--- a/projects/mtg/bin/Res/test/_tests.txt
+++ b/projects/mtg/bin/Res/test/_tests.txt
@@ -178,6 +178,7 @@ drift_of_the_dead.txt
 dromad_purebred.txt
 dross_harvester.txt
 duskwalker.txt
+dust_corona.txt
 dwarven_warriors.txt
 ebony_horse.txt
 ekundu_cyclops1_i218.txt
@@ -219,6 +220,8 @@ giant_growth.txt
 giant_growth2.txt
 glimpse_the_unthinkable.txt
 gnarled_effigy.txt
+gnat_alley_creeper1.txt
+gnat_alley_creeper2.txt
 goblin_balloon_brigade.txt
 goblin_balloon_brigade2.txt
 goblin_king.txt
@@ -246,6 +249,7 @@ imaginary_pet.txt
 immaculate_magistrate.txt
 instill_energy_i166.txt
 jodahs_avenger.txt
+juggernaut.txt
 jump.txt
 karns_touch_i233.txt
 keldon_warlord.txt
diff --git a/projects/mtg/bin/Res/test/dust_corona.txt b/projects/mtg/bin/Res/test/dust_corona.txt
new file mode 100644
index 000000000..4a85ffd49
--- /dev/null
+++ b/projects/mtg/bin/Res/test/dust_corona.txt
@@ -0,0 +1,29 @@
+#NAME: Dust Corona
+#DESC: checks an aura which grants
+#DESC: a "can't be blocked by" ability
+[INIT]
+firstmain
+[PLAYER1]
+inplay:Raging Goblin
+hand:Dust Corona
+manapool:{R}
+[PLAYER2]
+inplay:Suntail Hawk
+[DO]
+Dust Corona
+Raging Goblin
+next
+next
+Raging Goblin
+next
+Suntail Hawk
+next
+next
+[ASSERT]
+combatend
+[PLAYER1]
+inplay:Raging Goblin,Dust Corona
+[PLAYER2]
+inplay:Suntail Hawk
+life:17
+[END]
diff --git a/projects/mtg/bin/Res/test/gnat_alley_creeper1.txt b/projects/mtg/bin/Res/test/gnat_alley_creeper1.txt
new file mode 100644
index 000000000..c849d266d
--- /dev/null
+++ b/projects/mtg/bin/Res/test/gnat_alley_creeper1.txt
@@ -0,0 +1,23 @@
+#NAME: Gnat Alley Creeper
+#DESC: checks the ability "can't be
+#DESC: blocked by creatures with flying"
+[INIT]
+combatattackers
+[PLAYER1]
+inplay:Gnat Alley Creeper
+[PLAYER2]
+inplay:Suntail Hawk
+[DO]
+Gnat Alley Creeper
+next
+Suntail Hawk
+next
+next
+[ASSERT]
+combatend
+[PLAYER1]
+inplay:Gnat Alley Creeper
+[PLAYER2]
+inplay:Suntail Hawk
+life:17
+[END]
diff --git a/projects/mtg/bin/Res/test/gnat_alley_creeper2.txt b/projects/mtg/bin/Res/test/gnat_alley_creeper2.txt
new file mode 100644
index 000000000..a2e20c45e
--- /dev/null
+++ b/projects/mtg/bin/Res/test/gnat_alley_creeper2.txt
@@ -0,0 +1,23 @@
+#NAME: Gnat Alley Creeper 2
+#DESC: checks the ability "can't be
+#DESC: blocked by creatures with flying"
+#DESC: Pass 2: Does normal blocking work?
+[INIT]
+combatattackers
+[PLAYER1]
+inplay:Gnat Alley Creeper
+[PLAYER2]
+inplay:Raging Goblin
+[DO]
+Gnat Alley Creeper
+next
+Raging Goblin
+next
+next
+[ASSERT]
+combatend
+[PLAYER1]
+graveyard:Gnat Alley Creeper
+[PLAYER2]
+graveyard:Raging Goblin
+[END]
diff --git a/projects/mtg/bin/Res/test/juggernaut.txt b/projects/mtg/bin/Res/test/juggernaut.txt
new file mode 100644
index 000000000..dcd3d58b4
--- /dev/null
+++ b/projects/mtg/bin/Res/test/juggernaut.txt
@@ -0,0 +1,23 @@
+#NAME: Juggernaut
+#DESC: checks Juggernaut's ability
+#DESC: "can't be blocked by walls"
+[INIT]
+combatattackers
+[PLAYER1]
+inplay:Juggernaut
+[PLAYER2]
+inplay:Wall of Stone
+[DO]
+Juggernaut
+next
+Wall of Stone
+next
+next
+[ASSERT]
+combatend
+[PLAYER1]
+inplay:Juggernaut
+[PLAYER2]
+inplay:Wall of Stone
+life:15
+[END]
diff --git a/projects/mtg/include/AllAbilities.h b/projects/mtg/include/AllAbilities.h
index 45e2c4edd..629343e2b 100644
--- a/projects/mtg/include/AllAbilities.h
+++ b/projects/mtg/include/AllAbilities.h
@@ -1190,6 +1190,38 @@ class AProtectionFrom: public MTGAbility{
 };
 
 
+//Can't be blocked by...
+class ACantBeBlockedBy: public MTGAbility{
+ public:
+  TargetChooser * fromTc;
+  ACantBeBlockedBy(int id, MTGCardInstance * _source, MTGCardInstance * _target, TargetChooser *fromTc):MTGAbility(id,_source,_target),fromTc(fromTc){
+
+  }
+
+ int addToGame(){
+   MTGCardInstance * _target = (MTGCardInstance *)target;
+   _target->addCantBeBlockedBy(fromTc);
+   return MTGAbility::addToGame();
+ }
+
+  int destroy(){
+    ((MTGCardInstance *)target)->removeCantBeBlockedBy(fromTc);
+    return 1;
+  }
+
+  ACantBeBlockedBy * clone() const{
+    ACantBeBlockedBy * a =  NEW ACantBeBlockedBy(*this);
+    a->isClone = 1;
+    return a;
+  }
+
+  ~ACantBeBlockedBy(){
+    SAFE_DELETE(fromTc);
+  }
+
+};
+
+
 //Alteration of Power and Toughness  (enchantments)
 class APowerToughnessModifier: public MTGAbility{
  public:
diff --git a/projects/mtg/include/MTGCardInstance.h b/projects/mtg/include/MTGCardInstance.h
index 7668e944f..413ba8df6 100644
--- a/projects/mtg/include/MTGCardInstance.h
+++ b/projects/mtg/include/MTGCardInstance.h
@@ -123,6 +123,11 @@ class MTGCardInstance: public CardPrimitive, public MTGCard, public Damageable {
   int removeProtection(TargetChooser *tc, int erase = 0);
   int protectedAgainst(MTGCardInstance * card);
 
+  vector<TargetChooser *>cantBeBlockedBys;
+  int addCantBeBlockedBy(TargetChooser * tc);
+  int removeCantBeBlockedBy(TargetChooser *tc, int erase = 0);
+  int cantBeBlockedBy(MTGCardInstance * card);
+
   void copy(MTGCardInstance * card);
 
   void setUntapping();
diff --git a/projects/mtg/src/MTGAbility.cpp b/projects/mtg/src/MTGAbility.cpp
index f7dfee979..0a4252a05 100644
--- a/projects/mtg/src/MTGAbility.cpp
+++ b/projects/mtg/src/MTGAbility.cpp
@@ -737,22 +737,6 @@ MTGAbility * AbilityFactory::parseMagicLine(string s, int id, Spell * spell, MTG
     return a;
   }
 
-  //Gain/loose Ability
-  for (int j = 0; j < Constants::NB_BASIC_ABILITIES; j++){
-    found = s.find(Constants::MTGBasicAbilities[j]);
-    if (found == 0 || found == 1){
-      int modifier = 1;
-      if (found > 0 && s[found-1] == '-') modifier = 0;
-      if (!activated){
-        if(card->hasType("instant") || card->hasType("sorcery")  || forceUEOT){ 
-           return NEW AInstantBasicAbilityModifierUntilEOT(id, card,target, j,modifier);
-        }
-        return NEW ABasicAbilityModifier(id, card,target, j,modifier);
-      }
-      return NEW ABasicAbilityAuraModifierUntilEOT(id, card,target, NULL,j,modifier);
-    }
-  }
-
   //Protection from...
   found = s.find("protection from(");
   if (found == 0){
@@ -771,6 +755,40 @@ MTGAbility * AbilityFactory::parseMagicLine(string s, int id, Spell * spell, MTG
     return NULL; //TODO
   }
 
+  //Can't be blocked by...
+  found = s.find("cantbeblockedby(");
+  if (found == 0){
+    size_t end = s.find (")", found);
+    string targets = s.substr(found+16,end - found - 16);
+    TargetChooserFactory tcf;
+    TargetChooser * fromTc = tcf.createTargetChooser(targets, card);
+    if (!fromTc) return NULL;
+    //default target zone to opponentbattlefield here?
+    if (!activated){
+      if(card->hasType("instant") || card->hasType("sorcery")  || forceUEOT){ 
+         return NULL; //TODO
+      }
+      return NEW ACantBeBlockedBy(id, card,target,fromTc);
+    }
+    return NULL; //TODO
+  }
+
+  //Gain/loose simple Ability
+  for (int j = 0; j < Constants::NB_BASIC_ABILITIES; j++){
+    found = s.find(Constants::MTGBasicAbilities[j]);
+    if (found == 0 || found == 1){
+      int modifier = 1;
+      if (found > 0 && s[found-1] == '-') modifier = 0;
+      if (!activated){
+        if(card->hasType("instant") || card->hasType("sorcery")  || forceUEOT){ 
+           return NEW AInstantBasicAbilityModifierUntilEOT(id, card,target, j,modifier);
+        }
+        return NEW ABasicAbilityModifier(id, card,target, j,modifier);
+      }
+      return NEW ABasicAbilityAuraModifierUntilEOT(id, card,target, NULL,j,modifier);
+    }
+  }
+
   //Untapper (Ley Druid...)
   found = s.find("untap");
   if (found != string::npos){
@@ -845,6 +863,9 @@ int AbilityFactory::abilityEfficiency(MTGAbility * a, Player * p, int mode, Targ
   if (APowerToughnessModifier * abi = dynamic_cast<APowerToughnessModifier *>(a)) return (abi->wppt->power.getValue()>=0 && abi->wppt->toughness.getValue()>=0) ? BAKA_EFFECT_GOOD : BAKA_EFFECT_BAD;
   if (APowerToughnessModifierUntilEndOfTurn * abi = dynamic_cast<APowerToughnessModifierUntilEndOfTurn *>(a)) return abilityEfficiency(abi->ability, p, mode,tc);
 
+  if (dynamic_cast<ACantBeBlockedBy *>(a)) return BAKA_EFFECT_GOOD;
+  if (dynamic_cast<AProtectionFrom *>(a)) return BAKA_EFFECT_GOOD;
+
   map<int,bool> badAbilities;
   badAbilities[Constants::CANTATTACK] = true;
   badAbilities[Constants::CANTBLOCK] = true;
diff --git a/projects/mtg/src/MTGCardInstance.cpp b/projects/mtg/src/MTGCardInstance.cpp
index 87c2a9b8b..30f8792fe 100644
--- a/projects/mtg/src/MTGCardInstance.cpp
+++ b/projects/mtg/src/MTGCardInstance.cpp
@@ -353,6 +353,7 @@ int MTGCardInstance::canBlock(MTGCardInstance * opponent){
   if (!opponent->isAttacker()) return 0;
   // Comprehensive rule 502.7f : If a creature with protection attacks, it can't be blocked by creatures that have the stated quality.
   if (opponent->protectedAgainst(this)) return 0;
+  if (opponent->cantBeBlockedBy(this)) return 0;
   if (opponent->basicAbilities[Constants::UNBLOCKABLE]) return 0;
   if (opponent->basicAbilities[Constants::FEAR] && !(hasColor(Constants::MTG_COLOR_ARTIFACT) || hasColor(Constants::MTG_COLOR_BLACK))) return 0;
 
@@ -569,6 +570,33 @@ int MTGCardInstance::protectedAgainst(MTGCardInstance * card){
   return 0;
 }
 
+
+int MTGCardInstance::addCantBeBlockedBy(TargetChooser * tc){
+  cantBeBlockedBys.push_back(tc);
+  return cantBeBlockedBys.size();
+}
+
+int MTGCardInstance::removeCantBeBlockedBy(TargetChooser * tc, int erase){
+  for (size_t i = 0; i < cantBeBlockedBys.size() ; i++){
+    if (cantBeBlockedBys[i] == tc){
+      if (erase) delete (cantBeBlockedBys[i]);
+      cantBeBlockedBys.erase(cantBeBlockedBys.begin()+i);
+      return 1;
+    }
+  }
+  return 0;
+}
+
+int MTGCardInstance::cantBeBlockedBy(MTGCardInstance * card){
+  for (size_t i = 0; i < cantBeBlockedBys.size() ; i++){
+    if (cantBeBlockedBys[i]->canTarget(card)) 
+      return 1;
+  }
+  return 0;
+}
+
+
+
 /* Choose a sound sample to associate to that card */
 JSample * MTGCardInstance::getSample(){
   JSample * js;