The effect:
No prizes for guessing that this is a torn and restored card, the kicker being that having been T'd and R'd, the card is revealed to be different to the one torn.
http://www.theory11.com/tricks/tnr.php
$24.95 download
Difficulty 3/4 a few basic sleights, and making the gimmick is fiddly at first.
Torn and restored tricks are legion, from the godlike genius of Ascanio's carta rota y restorada to the workaday functionality of Jay Sankey's cardboard contortionists but this, in my opinion, rewrites the book.
The plot is this; you place a prediction card face down and invite the spec to make a selection. Your prediction is wrong and, in disgust, you tear it into quarters.
You then openly, visually restore the torn card, displaying each individual quarter as you do so. When the card is restored, you turn it round to reveal that it has turned into the selection.
I performed this at a gig for the first time last weekend and got...silence. Then, after they had recovered from the shock, the audience went NUTS. Unbelievable reaction.
What you get are instructions for making a single-use gimmick and some very practical guidelines on performance presented very entertainingly but still clearly by Chris Kenner. As he says, making the gimmick is a hassle at first, but with practice it gets easier.
The downside, such as it is, is that if you perform this regularly, you'll find it very heavy on dupe cards, but apart from that minor cavill, I can't fault it. Absolutely marvellous
10/10