Stroop Test by David Jonathan and Nikolas Mavresis
A set of cards is introduced that have the names of the colors printed on them. Each of the words is printed in a different color than what it reads. A spectator is asked to choose a number, and the magician deals down that many cards. The color on the card is shown to match a prediction the magician made before the trick even started.
The Stroop Test comes with custom printed cards that do all of the work for you. There are no complicated spelling procedures or unusual methods of displaying the cards. The number the spectator says is the number that you actually deal. Multiple clever principles interlock to create an engaging and baffling prediction effect. Start testing your audiences with The Stroop Test.