The W'OW routine has two parts. It starts as usual with six cards, three reds and three blacks. They are mixed together one by one, and then they separate from each other automatically. We continuously do the second part, and put them together again one by one. The difference happens. The effect is no longer stay on the faces of the cards, but it also go on their backs.
No difficult sleights of hands, and No special gimmicks. You do deliver a strong effect in an easy way.
Both of your audience and magician friends will like it. It's gonna be your favorite.