From the embodiment of stage magic cliche, Marshall Brodien, comes TV Magic Cards -- these were a big thing in the early 70s.
See how the box logo's "A" works for both "mAgic" and "cArds"? Magical.
How the deck itself works is a secret. And here it is: every other card is a "key" card. For this deck, it happens to be the Deuce of Clubs. (Why else would it be featured here? Ask yourself.)
It's possible to do lots of goofy tricks with these things, each of them with the Deuce of Clubs as the kicker.
Ask us, next time you see us, and we'll be happy to bore you to distraction with a few Deuce of Clubs tricks.