A really different card effect that your spectator will love!
You allow your spectator to select any card from a pack, and sign the face. You draw four black X's on the back of the card, one in each corner. With no covering of any kind, the X'S visually jump, one at a time, into the top left corner of the card!
Best of all, the X's are now permanently in the corner, and you can give the signed card to the spectator as a souvenir.
This is a very different and very cleverly made gimmick that is easy to master. Well worth adding to your card routines!
Use your own RED Bicycle back playing cards.