WOW! Magic trick
Magic effect: Viewers can pick a card, in the signature card back in, and then another different cards, such as paper-like into thick transparent plastic card, plastic card with your thumb and index finger holdinghands in the absence of any action under, in the plastic card card slowly into the audience just selected and signed card.
Viewers can take out the plastic card in hand, however, there is no other brand of plastic card !!!