From the mind of Danny Weiser comes a visual and unique revelation which allows you to change the writing on a cardbox.
Sample routine - A card is chosen by the spectator. You mention that you have a prediction on your card box. You show your prediction to be a question mark. In the blink of an eye, the question mark changes into the spectator's chosen card, for example 5H.
Easy to do
Examinable after the effect