Poster Card Prediction

The magician shows a prediction back. Then, he has a spectator choose a playing card. Sure of his prediction he shows it in his face, but it will turn out to be white!
The magician closes the prediction halfway, says a magic word and, when he reopens it and shows it, the face will be identical to the chosen card!

• Simple, takes up very little space and is visible even from afar!
• The open poster measures 30.5 x 45.5 cm. The deck of cards is not included.