Even though I am not going to use this I did feel it was worth the $15. If math is no problem for you I would highly recommend this effect. I personally do not do well with math under pressure.
So I wouldn't be able to keep practiced with this effect. So the only time I would be able to perform this would be with a borrowed deck which is very rare. But it does require a complete deck which I never have after my first table. If this were an effect that I could perform on a regular basis then it would be worth learning the math. One thing that people need to know is there is some math involved here. Will I be doing this effect? No I'm afraid not. The fact that you find their card is not as impressive as them finding yours. I bought this and the thinking is very good.
