From publisher blurb:
A book examining all aspects of magical decks in your Pathfinder Roleplaying Game.
You've seen the crazy thing that a Deck of Many Things can do to not just a table, but to an entire campaign? If so, then this book is for you! Filled with every conceivable magical deck, from Decks of Illusions to Decks of Conjuring, each one ready to throw at your table. Detailed tables, charts, and more help you bring these magical decks to life like no other.
Magical decks are not the only thing to play with. The Deadly Dealer feat allows you to use regular playing cards to deadly effect. Even better, when you use a magical deck the results of the card affect your targets! Rules for using magical decks as weapons are here and ready to incorporate into your Pathfinder Roleplaying Game campaign!