After very fair elimination process, the spectator ends up with just one card, that matches the performer’s prediction. You can see the performance on the video below, isn’t it amazing?
The method itself is quite easy, and the trick simple to perform, most of the time the deck could be handled by the spectator, even if the last part should be done by the performer. And probably you don’t need to buy anything for making the gimmick.
More to say? Yes! The video tutorial is very long, one hour, for a simple effect like this but it’s full of interesting ideas and it covers all the possible outcomes. Plus a short contribution by Erik Tait about building up the material you need to build the gimmick (uh?).