I really want this trick but the one thing that's bugging me is when, in the preview, Chris cant find the chosen card and just uses a different one. What I'm scared of is what if their chosen card is easily visible and they say "oh there it is" and you are forced to use it? I know the trick would still be impressive with the capturing of the card, but then you do not get the surprise ending. If answering this requires exposing some crucial information about the trick then you don't have to answer, but just telling me if it is a problem or if it isn't would work.