The spectator shuffles a packet of playing cards as much as he wants in order to get a mess of face-up and face-down cards. He spells MY CARD to find his. You remove a card from an envelope in full view from the start: It is the same card on which is written the way the selection ended up into the packet (face up or face down)!
— "Double Impossibility" uses a fake card that is readily available.
— This sleightless trick can also be found among others in the e-book "All In The Mind", a Penguin Magic exclusive that you may want to purchase here: http://www.penguinmagic.com/p/4037
— By clicking on the above link, you will also have access to a video demo for "Double Impossibility".