Waste World Campaign Pak

From the back of the book: In the Campaign Pak, which is included with a laminated informational shield, you'll find all you need to kick off adventures in the wild wastelands of Avernus. Detailed encounter tables and weather charts let you throw all sorts of hazards at your player characters. New optional combat rules cause havok and do harm. Advanced psionics rules let you create fearsome new types of Psychers.