Co-Sign by Mark Calabrese(http://www.kevinmagicshop.com/)

This card trick is PERFECTION. SO powerful and fun. It plays exactly like you see in the demo and there's zero sleight-of-hand.

1. You sign the back of ONE mystery card and lose it in the deck.

2. Your spectator names ANY (YES, NAMES ANY!!) card and signs the face of THAT card.

3. When you spread the deck, there is CLEARLY only ONE card signed, and it's their THOUGHT-OF card, signed on both sides.

The method is holy-moly-get-out-of-town clever. Perfected over years of performance, you'll see how polished everything about this routine is.

PROFESSIONALS: What a perfect card trick!! A true worker. Gives you a perfect souvenir for your spectator, which they're never gonna forget. You can use any old deck, and you can master it in MINUTES.

NERD ALERT: We're gonna get a little nerdy here, but I gotta say one thing. The mark of a truly great trick is that it's easy to describe. A lot of times card tricks get complicated and people are left feeling fooled, but also slightly confused. This trick (called Co-sign) is so pure, it plays exactly like you'd describe it. No funny moves or weird choreography. It's just brilliant.