The spectator selects a card. The card is lost in the deck. You gesture to your card box, then you direct the spectators attention to the tab on the card box. On the tab the spectator sees a written prediction. Sadly the prediction is wrong. But wait!!! YOU! Yeah you. You are a magician and you can fix this. With just a mere wave of your hand the written prediction changes into the selected card!
This is a very amazing idea that starts and ends clean. (I guess the middle part is a little dirty :) , No palming, your own card box, no loose tabs laying anywhere.
I hope you have fun.