How does one do that card trick?

Okay, I'll explain how it worked. Now stay with me. The whole concept of it is camera trickery. Perhaps none of you noticed but right before he finds that card among the money, there's a cut, giving the film makers ample time to put the correct card in there and presenting the illusion that the entire scene happened live.

But if you really want to do it in real life, you need to do a sleight of hand, that is to make the person unwittingly pick the intended card and having already placed that card from an identical pack into the money beforehand. You will notice when he does the trick later in the film, it's the same card that was in the money.