Technology today is at its peak in amazing feats and is only getting more impressive, so it's hard to sway the average heckler with a simple snap change. When technology can do so many extraordinary things, how do you make people open their eyes in disbelief at something? Here is one answer- an incredibly modern change which gives the illusion that you have control over ink!
All that is about to change, as Tremble will cause your audience members to do a double take in amazement. You will be able to make any prediction, drawing, or ink slowly appear and vibrate on a card with no sleight of hand - as if the ink had a mind of its own. There are no flaps, magnets, angles, or thick cards to worry about. It's a single card that you can then hand out later.