Mark Southworth's Double Cross Gustavo A card is chosen and

A card is chosen and then signed by another member of the public

Due to the well-hidden

Years of thinking

While the stunning embossed card box built from custom kraft stock ensures it will be a centerpiece addition to any playing card collection

The magician says:

Mark Southworth's Double Cross Gustavo A card is chosen andAsk a spectator to hold out their hand and make a closed fist. Pull out a marker and draw an 'X' on the center of your palm and close it into a fist. Now without any rubbing, erasing or funny business, you slowly open your hand and reveal your X is COMPLETELY GONE. Now ask the spectator to open their hand THE X IS ON THEIR PALM! Ask them to try to rub away the X they can't! It's Sharpie ink! Tell them not to worry though it's safe and nontoxic and can