http://www.theory11.com/tricks/divided-jesse-feinberg.php
A card is selected and signed. It is returned to the
deck, and mixed back in. You turn over the top card - hoping it is the
chosen one... but sadly, it isn't.
You take that indifferent card and TEAR it - showing a
glimpse of its face up until the last moment - when it visually changes
into the card you originally selected and signed.
Simple, powerful magic by Jesse Feinberg - taught in 18 minutes of video instruction. Download and start learning now.