N.R.F. by Sandro Loporcaro

N.R.F. by Sandro Loporcaro
One of the uses of N.R.F. technique by Sandro Loporcaro (Amazo). Show a deck of cards, the magician marks an X in the air with a sharpie. Now the spectator touches any card and after removing the card and realized that be the only marked with X. Using N.R.F. in your Ambitious Card routine or to force one.