Have a card selected and tear a corner off from that card. Next, your take that corner piece and drop it on top of your deck visually and magically the card piece changes into a sharpie drawing! This looks like CGI but done in real life circumstances.
Drawn is not only limited to playing cards but anything small and flat will work e.g a piece of a bill, sugar packet, billet etc. Simply drop it and change it into a drawing!
Right after the super-visual chance, the card can be handed out for examination and may be kept by the spectator as an amazing, unique souvenir!