Divining Fork by Scott Alexander

Borrow a fork, borrow a napkin, then blow their mind.

Divining Fork is the perfect impromptu party trick. A card is fairly selected and signed a napkin covers the deck so that no one including yourself will know the location of their card. With a quick thrust a fork is jammed into the deck and through the deck and a startling revelation appears, their SIGNED playing card stuck in the tines of the fork.

Divining Fork uses all borrowed objects and has a stunning visual moment.

The effect is easy to learn and for the spectator impossible to forget.