Collect a visiting card from any of your spectators. Put it an envelops and give the envelope back to the same spectator. Use your magic power, take the envelope again and return the visiting card to him but surprisingly in the meantime his card disappears and it is your own visiting card which replaces the previous one.

Props: two identical envelopes which open at one end.

Adv. Pre: Trim off one envelope, 2 mm from all three sides and retain only the piece bearing the flap. Push this into the other envelope and slide down your own visiting card in between the two flaps. Seal the flaps together to give it the shape of an ordinary envelope.

Show to the audience that the envelope is empty but don't let them touch it. Ask a spectator for his visiting card, place it in envelope, paste it and hand it over to the same spectator.

Wave the wand in air, repeat your magic formula and take back the envelope. Open it with any sharp instrument making sure to cut between the flaps where your own card is concealed. Take it out and hand it over to the spectator to puzzle him.