Two packets of jumbo half-cards are mixed. A spectator freely selects a card from one of the packets and leaves it protruding. You simultaneously turn the top cards of both packets face up showing the cards are different. Continue until the selected card is reached, it matches the card in the other pile. A perfect match.
As a kicker ending, both packets are turned face down and when you start dealing the cards face up, each and every card matches.
Mere words can't describe this true miracle. Ungaffed, examinable and very easy to do. Comes complete with all the necessary Jumbo Bicycle cards and photo-illustrated instructions.