Wow! by Katsuya Masuda

A spectator chooses a card
from a deck of cards and signs his/her name across the
face of the selected card. The card is replaced back
into the deck and shuffled. Then the performer picks a
card, which is revealed to be an indifferent card. He
places it into a transparent plastic card holder. The
spectators can see the face of the card inside the
holder. As the magician makes a magical gesture, the
indifferent card morphs into the signed selection. The
card is removed from the holder and handed out for
examination.