You give blank business cards to your audience and ask them to add a message

in this mechanical version you get the same effect (and even more) but with much less practice

and double foil stamped with bronze and gold

Jean Hugard's Thumb Amputation

"David has created not only an incredible piece of magic but also a utility that is genuinely going into my shows

SUB-CHANGE | Patricio Terán and JT Magic (Blau) Turner - Peter; Pigcake You give blank business cardsSUB CHANGE is a novelty and highly visual effect. The magician steps on a Joker card, and then asks the spectator to select a card. In an instant, the Joker under the magician's foot visually transforms into the spectator's chosen card. You can even perform a version where the spectator's card and the Joker under your foot switch places! Advantages: Unique & Eye Catching A card change underfoot is rare and always amazes audiences. Highly Visual, Yet