A spectator selects a card and signs it. The signed card is then held by the spectator. Then a different card is selected by the
spectator and the magician signs it. The second card is returned to the deck only to visibly vanish in plain sight. When the spectator
is ask to open their hands to see what they are holding, the spectator is now holding one card which has the spectator selected signed
card on the front side and the magicians signed card on the back.