The beauty of the Impossible Killer is that you can use any deck of cards no matter how worn or how many cards are missing from the pack. It’s the kind of effect that you can perform as a house guest at a friends home, or when you’ve been called to perform something and you’re unprepared but there is a deck available or close by. Bill has performed this in many environments and with every kind of borrowed deck. It’s in the miracle class and has several layers of deception making it impossible for your audience to figure out. Even if your audience is full of magicians!