Roll (Gimmicks and Online Instructions) by Chris Congreave - TricksRoll works in any language! Roll by Chris Congreave is the perfect mental card effect. Let me start by saying that since we have been playing with this effect at Alakazam, all of us have added it to our magic repertoire. It's so cool and you will love performing it! You show a deck of blue backed cards to have one red backed card sitting in it, stating it is a prediction of things to come. You out jog the red back card a little to show the words, "You