Forum:Why does DD Crow work?

+Ok now this is something Ive been wondering about for a good long while. Everyone seems to be suggesting running DD Crow or Transmigration Prophecy to deal with monsters like DAD or Judgment.

My questiuon is this how are these cards actually effective? I mean that yea they can screw up the graveyard but it always seems that you dont worry about it till after the monster is summoned.

And heres where I get confused. People say to play DD Crow in responce to the summoning. But I don't know why that would stop it. I mean DD Crow isn't chaining to the summon and as such the summon should resolve first before DD crow and as such not be able to stop it. So I need to know if IM misunderstanding the ruling or if the people giving me advice are since if Im gonna be playing this card and someone argues a effect I have to know why a card is able to do what it does 75.118.241.251 12:02, January 2, 2010 (UTC)