From the publisher:
The Campaign Creator deck aids in the creation of campaign and quest structures. Randomly generate concepts and themes by drawing cards when writing up a new campaign or story. Quest, Interlude, Theme and Story cards can be laid out and connected to create unique campaign concepts. Roll six sided dice and place them on the cards, and flip coins, to add even more nuance to each card drawn.
The Campaign Deck can be used in multiple ways. Shuffle and draw cards, placing them beside one another, to create a string of events that will guide you when planning gaming sessions. Once you have drawn and placed your cards, try to think how adjacent cards can flow together and affect one another. The titles of the cards can be taken literally, or simply used as inspiration for campaign content.