This is the “object to impossible location” plot on steroids. It's a mind-blowing moment with an equally brain-breaking visual. They can immediately take their bill back, instantly transforming it into an unforgettable souvenir that will remind them of the unbelievable experience you gave them every time they look at it.
All of this is possible thanks to “Stratis”, an ingenious gimmick from Michal Kociolek and Roman Slomka that enables you to quickly and covertly load a signed bill inside a playing card. It hides in plain sight in your card box, allowing you to perform this miracle-level effect wherever you go. Imagine a card to wallet type setup, but with a card box and playing card.
No dummy signatures or weird switches are required. Their bill genuinely ends up between the layers of the card. Both the card and bill are totally examinable at the end.
"Stratis" is not limited to bills. Load any flat or foldable object such as coins, predictions, receipts, and more. (This is particularly helpful for countries that use polymer currency, because these bills can sometimes be more difficult to crease and fold.)