Spellochange by Jesse Feinberg (watch video).
A written prediction visually changes on a pack of cards...
A card is selected and returned to the deck. The magician takes the card box and writes a prediction on it. When it is revealed, the prediction doesn't make any sense...It looks like a random lines. Wait...Give it a shake, and the lines slowly form into a correct prediction! This is super visual, and very customizable... The concept is new, and there is nothing else like this!
Includes gimmick and instructions.
Spellochange by Jesse Feinberg (watch video)