Got this for Christmas, and really love how easy it is to do.
One minor issue I've come
across is people not understanding the whole "find the card's mate" principle. This could obviously
just be something I need to work on explaining better.
To overcome that in the meantime, I
made a variation to the trick. I will take out an indifferent deck, force THE card, or just take it
out myself. Then I deal cards face-down with the Perfect deck and "find" the exact same card.