SPY Marked Magic Playing Cards is also known as the grand master marked deck (black back). You can easily read the faces of the cards from the back design. It is very easy to learn the pattern and memorize them. Therefore you know every card without seeing it. It is available in red back color. Bridge Size playing cards. There is a tricks/password on back side of every 52 cards. It is very easy to learn on one will know that you know every card without seeing it. These cards are normal cards with a trick. The package includes one set of 52 magic cards with trick learning instructions.