I can't seem to find the Bicycle cards with the backs slightly offset, whereby one side of the design is thicker/thinner than the other. This allows you to have a spectator select a card, then you secrets turn the deck around 180 degrees so that then they insert their card anywhere in the deck, you can locate it simply by fanning through the back of the deck and locating their card as it's the only one with the thicker or thinner offset. Is there a special name for this deck?