You remove an invisible pack of cards from your pocket and ask a spectator to give them a shuffle. You then ask them to remove any one of the 52 invisible cards, remember it, and then place it face down in to the face up deck. You then place the cards into your pocket and immediately remove them again. This pack is a real one. The spectator names their card and when the cards are removed from the box one card is found to be face down in the deck. This turns out to be the very same card which they selected. This is a must for any performer, and it is guaranteed to knock them dead.
(NOTE: This effect is supplied in a quality Bicycle Poker sized deck.)