A spectator selects and signs a card from a red-backed deck. The card is returned, yet with just a snap of the magician’s fingers the impossible occurs—the deck is spread to reveal one card with a blue back right in the middle. When it is turned over, it proves to be the signed selection! The magic happens while the spectator handles the card both before and after the change, making this effect as fair as it is astonishing. The signed card can even be kept as a lasting souvenir.
 
This routine delivers a strong, visual transformation with minimal props. The spectator’s signed card visibly changes backs in full view, cementing the impossibility. It’s straightforward to perform, yet it leaves a lasting impact that spectators will remember long after the performance.