I purchased the entire series and I am going through them one by one. This is such a great effect
and this one really is close to being automatic. It requires doing a little addition and subtraction
but then the fact that this is just a math trick is hidden so well. You have no idea this is a math
based trick.
You can do this with no sleight of hand. It helps if you have a good
overhand shuffle. But that is it! This is brilliant.