Mechanical Deck-Bauer

Make any deck of cards do your work for you. Shuffle a selection among the other cards, and the deck finds the card. Let the audience see how it works in slow motion! Astonishing visual magic. BONUS:

You can make any deck of cards, yours or borrowed, appear to be a deviously designed device! A TRICK DECK! Close inspection by the untrained eyes of your spectators reveals nothing, but you prove your claim by causing the deck to VISIBLY find a freely selected card.

This is THE most deceptive and easy to do version of the Haunted Pack.