Essentially the effect looks exactly like its on the video (which to me seemed quite novel). If you
like the effect, for 4$ you can't go wrong.
Method-wise, there are several provided, some
require more setups than others ( from 4 cards all the way to an interesting full deck stack that I
haven't seen before). One direct method employs a common stack which the handling will maintain with
no problems. This makes this trick a worker for me.
If you like the trailer, I recommend
it. If you work with stacks, you will really like the thoughts shared in this download even if you
are experienced.