A card is selected and signed. The card is replaced anywhere in the deck. The deck is replaced back inside the card case. You explain you will use the spade from the center of the card box to find their signed card.
In the blink of an eye, the SPADE vanishes from the card box. The deck is removed from the box, The SAME BOX is handed to your spectator and IT IS FULLY EXAMIMABLE. The cards are dealt one at a time, all the backs are shown. There is one card now with a spade
on the back. Yes it's the SIGNED CARD.
A BRILLIANT METHOD
You will receive the custom made gimmicks, a specially printed card box and 2 knockout routines.