Cannon (Gimmicks and Online Instructions) by David Regal - TrickEasily predict or produce ANY named card in an envelope or box with "Canon" by David Regal and Vanishing Inc. "Canon" is a powerful and versatile effect that you'll love performing. The super clever method will put a huge smile across your face, especially when you realize it's easier to do than you thought. At its core, "Canon" is a specially made deck of cards that enables you to produce any named card in an envelope, card box, or essentially