Here’s the trick: You tear up a 4 and put a corner of the card in your friend’s hand. Then you take a step back and tear up a 7. You hold a corner of the 7 between your fingertips…and VISUALLY CHANGE IT INTO THE CORNER OF THE 4. Then your friend opens up her hand…AND SHE’S GOT THE 7.

VERY IMPORTANT POINT: This trick ONLY USES TWO CARDS. No extra pieces, no fancy sleight-of-hand. THE CARDS DO ALL THE WORK FOR YOU. And when you’re done with the trick, YOUR FRIEND CAN KEEP THE TORN CARD PIECES as a souvenir of this IMPOSSIBLE HAPPENING.
I know, I know—this one sounds too good to be true.

It’s not.

This one really does live up to the hype. Once you start performing Tornado, you’ll see it for yourself. You’ll see it in the faces of your friends, of your spectators. And you’ll want to see it again and again and again.
-Rick Lax

What you get:
When you buy Tornado, you’re going to get detailed instructions from Rick Lax, as well as an INGENIOUS subtlety taught by Justin Flom. 

You’ll receive EVERYTHING YOU NEED to perform Tornado, including 28 custom-designed, gimmicked cards, allowing for 14 performances. These cards were specially engineered and produced by Rick Lax, Justin Flom, Kevin Reylek, and the USPCC.

Refills can be bought here