I saw him perform a trick on his tv show where he made a girl choose a card, put it back in the deck, and then he put the whole deck in a fountain that was next to him, and all the cards except the card she chose "dissolved" in the water all while he tightly held the deck. This is one of my favorite tricks he does but I cannot for the life of me find an answer as to how he does it. surely someone must know or at least have a good theory?