COMES WITH - Special deck of cards (BICYCLE STOCK) & Download Video Instructions Liam Montier’s Dude As I Do is an impossible full deck coincidence routine that will cause your spectators a lifetime of sleepless nights. HOW IS IT POSSIBLE? The more they think about it, the more inexplicable it seems. You take 26 cards from one deck of cards, and your spectator gets 26 from a different deck. You BOTH shuffle your packet. With your cards behind your back you both pass a random card to each other, and slip it into your half deck.