This is a very well-conceived effect. The psychology employed is excellent. The spectators will be
convinced that they've been seeing a full deck of red cards the whole time, up until the change.
This effect is clearly not for beginners. Not so much because the moves are technically
difficult, but because there's a lot of timing and audience management issues that can only be
handled well with experience.
The main challenges are the initial card selection... it's
very limited. And the final steal and ditch can be extremely intimidating. Like I said, not
technically difficult... anyone can grab some cards and stuff them into their pocket. The issue
here is finding the right moment and using the right body language to make sure it isn't noticed.
This part has to be done well, because the whole point of the effect is that the deck can be
examined at the end. If you're spotted ditching cards, game over.
The change used here is
another one that a lot of people can do, but as Oz points out, a lot do it very poorly. All of this
adds up to an effect that it relatively easy to do, but actually somewhat difficult to do WELL. But
after seeing the demo, I think you'll agree it's very much worth the effort.
