Blank Prediction

This is one of the tricks that I always enjoy demonstrating. The effect is super strong, and yet you need almost no technical skill! The included gimmicks basically do all the work for you, leaving you free to concentrate fully on the presentation.

The effect is a double card prediction under impossible conditions. You write a prediction on a white card, which you show to the audience (almost like an open prediction). The card is placed in a wine glass. The spectators shuffle a normal deck of cards and freely choose a card. This card is also placed in the wine glass. Nothing can be exchanged or manipulated. Nevertheless, you show that you have predicted exactly this card!

The whole thing is repeated again. Again you write a prediction that everyone can see. The audience shuffles and selects a card. And again you have predicted the card correctly.
And everything you have used, you can give to the spectator, because nothing has been prepared! You get everything you need for the show, you only have to bring a normal deck of cards.