Look, it's a good trick. It's not one I personally plan to do, but it's a good trick.
However, the biggest issue is it isn't what it advertises it to be. It's called a "borrowed
deck" trick. And without spoiling it, you can't do this trick with a borrowed deck. Unless the deck
you take is exactly the same one that you "practice" with. It's not very impromptu either.
I really like a lot of his other tricks. But this is one I won't get any value out of.
Hi friend, it's a trick with a "borrowed deck" concept.
You can take the photo at any time and you'll have it forever. You don't have to take it before the trick, every time.
However, the term "borrowed deck" is synonymous with impromptu tricks. I don't think you're doing magic with decks that are given to you.
I say this as "One step ahead" in case you're now asking me: What if the deck they lend you isn't the same as the one in the photo?
;)
Best regards.