Card Matrix is a highly interactive routine designed by Craig Petty, where a shuffled deck of cards engages an entire audience. Inspired by a Max Maven effect from the 1980s, it allows participants to make seemingly fair choices, yet the magician's prediction proves correct every time. Suitable for close-up or larger audiences, the trick involves taking 12 cards from a shuffled deck and a prediction placed upfront, creating a killer reveal by the end. It’s a commercial gem, allowing you to perform with a regular deck and easily transition into other routines.