One and Only
One and Only was a marketed effect by Paul Harris and Tony MaClaren created in 2005 in which an "invisible deck" is taken out of an flat envelope. A spectator freely "destroys" these imaginary cards until only a single card remains. Let's say the Queen of Diamonds. The spectator tosses the invisible Queen of Diamonds toward the envelope. You then slowly and cleanly remove the "one & only" card in the envelope, the spectator's selected Queen of Diamonds.