A Bicycle, poker-size deck of cards, is shown and spread showing all the cards are face down. Half the deck is turned over so the faces are showing and the two halves are shuffled together. The cards are spread out showing they are all mixed up in a face-up and face-down condition.
A couple of cards are freely selected and placed back into the spread which is squared up. A magical gesture is made and when the cards are spread out again it is seen that they are all facing in the same direction again except for the chosen cards which are face-up in the face-down spread!
No sleights required. The special cards do all the work for you.