Blink Duplication by Katsuya Masuda

• A card is selected and signed by a spectator. 
• The selection is replaced in the deck and shuffled. 
• The magician introduces a blank face card and sticks it halfway into the middle of the deck. 
• With the blank face card sticking out, he puts the deck face down into its case, whose flap is kept open. 
• The magician shows the face of the blank card that is protruding from the deck. 
• He now holds the card case keeping its back toward the audience. 
• The magician pushes the protruding card a little. 
• Then he turns the deck face up. 
• To spectators’ surprise, the blank face card has changed into the chosen card with the spectator’s signature on it. 
• The magician removes the card and hand it to him for thorough examination. 

Comes complete with gimmick, Bicycle deck and instruction sheet.