This is a simplified version of a classic effect. Card at any number is one of the great mental
effects. Performing it can be extremely complex depending on what version you use. Think Nguyen has
come up with a method that eliminates a lot of complexities. However this method will take a lot of
practice. But it is well worth it. He has come up with a great effect that is devastating to a lay
audience. His tutorial is excellent. He lays out step by step how to perform the effect, and he
addresses the complexities clearly. This is a good effect.