Praedictio!

Get your spectator to merely think of a card, any card will do, whilst you shuffle the deck. 

Pluck out a card from the deck and place it face down on the table. 

Shuffle the deck some more and ask your spectator to name their card.  

Utter the magic words 'Mirabile Praedictio', pick up the card, turn it over and reveal the card that they were thinking of.

 Easy to perform, special gimmick (red backed bicycle) and instructions included. Any card can be picked and the trick can be repeated with a different outcome. You will also need a standard red backed bicycle deck (not included) but if you don't have one, we sell them.