"One of the most versatile and well-made utility devices I have ever used

you draw your participant's attention to the clock face printed on the card

This is how the viewers see it:

"Nothing is more pleasing to me than hiding something in plain sight

They can even be signed

Paradigm Shift - 10 Souvenir Books Gómez "One of the most versatileAre you already demonstrating Paradigm Shift by Christoph Borer? Then you already know how powerful the effect is. It becomes even more powerful if, at the end, you can give the empty book with the revealed page to the spectator as a souvenir. This set contains 10 "Everything Men Know About Women" books. No instructions. Books are supplied in English; unfortunately, German language books are no longer available.