From Simon Aronson, this is a very entertaining routine, in which the magician is trying to do a new card effect -- so new to him, that he must use an instruction card to walk him through the process of trying to find a chosen card which the spectator has signed, and has been mixed back into the deck. The instruction card is in full view throughout, and yet, in the end, it actually becomes the signed selected card.
Comes with 12 special instruction cards, which (if you have spectator sign each time) will be used up in 12 performances. Refills are NOT readily available, but... If you don't want to use up your supply, you could use removable stickers to have the card marked/signed. Also, (after performing this trick for many years) I have found that the effect is 99% as strong for lay audiences without signing the card. It still kills. I save the signing for high-pay gigs, when I want to leave the spectators with an impossible souvenir.
Well taught with the instruction booklet that comes with the re-usable gaff cards and 12 special instruction cards.