added an ability keyword that resolves to do nothing.

"donothing"
this is to avoid using powerandtoughness 0/0 ability to mean "do nothing"

old code
[card]
name=Inquisition
target=player
auto=target(*|targetedpersonshand) 0/0
auto=foreach(*[white]|targetedpersonshand) damage:1 targetedplayer
text=Target player reveals his or her hand. Inquisition deals damage to that player equal to the number of white cards in his or her hand.
mana={2}{B}
type=Sorcery
[/card]

new code
[card]
name=Inquisition
target=player
auto=target(*|targetedpersonshand) donothing
auto=foreach(*[white]|targetedpersonshand) damage:1 targetedplayer
text=Target player reveals his or her hand. Inquisition deals damage to that player equal to the number of white cards in his or her hand.
mana={2}{B}
type=Sorcery
[/card]

projects/mtg/src/MTGAbility.cpp

@@ -2196,6 +2196,15 @@ MTGAbility * AbilityFactory::parseMagicLine(string s, int id, Spell * spell, MTG
         return a;
     }
 
+        //Reset damages on cards
+    found = s.find("donothing");
+    if (found != string::npos)
+    {
+        MTGAbility * a = NEW AAFakeAbility(observer, id, card, target);
+        a->oneShot = 1;
+        return a;
+    }
+
     //Damage
     vector<string> splitDamage = parseBetween(s, "damage:", " ", false);
     if (splitDamage.size())