There is a trick called "FLASH" in the Daniel Madison's "BLOOD" pdf that matches with your description. You can download it on his website (it's free).
http://www.danielmadison.co.uk/Blood.html
I think Ebay is good to buy magic stuff at low cost. I bought the trilogy dvd, the royal road to card magic dvd and the expert at the card table for a very small price !!! And the dvds aren't illegal copies.
Salut, tu as posté un message en francais sur la video "freestylin' with yannick". Tu es francais ? Si oui ca fait plaisir, je commencais à penser que j'étais le seul francais sur theory 11.