From the publisher's website:
Sometimes you don’t know the true measure of an opponent until you look him directly in the eye. But in a fantasy roleplaying game that takes place within the imaginations of its players, how can you be sure that everyone envisions the same thing? Paizo's GameMastery line of accessories comes to the rescue with Face Cards: Enemies. This 54-card deck includes beautiful full-color illustrations you can use to give life and visual flair to the villains in your fantasy campaign.
Face Cards: Enemies contains a diverse mix of character types, from vile cultists to scheming nobles to treacherous blackguards. A blank writable surface on the back of each card helps to identify the characters and keep notes on them. Appropriate for both player characters and non-player characters alike, the stunning visages of GameMastery Face Cards bring a new visual flair to any fantasy RPG campaign!