This is an amazing feat that you can carry around with you all the time, and is very easy to do. A spectator picks a card, and it's lost in the deck. You then show your card box that has a prediction of a card written on it... but sadly it is wrong. But wait! You instantly shake the box and the prediction changes!
This effect is not only limited to card faces this trick can also be used to make ink appear, disappear and much much more. The spectator can even sign the box and the signature is still there when the ink changes.
This is a completely angle proof miracle, that I know you will love.
Welcome to MO-MO! Here is My YouTube channel if you want to see more: http://www.youtube.com/user/MrMOMOMagic