Ptolus: Monte Cook's City by the Spire - GM Screen
Ptolus: Monte Cook's City by the Spire is an amazingly convenient book, filled with thoughtful design and unique features to make the GM's job as easy as possible. But in a setting as big and vibrant as Ptolus, it's very handy to have key information in one easy-to-reference location. This four-panel, landscape-format screen is printed on heavy board stock, making it sturdy as well as beautiful, and has useful Ptolus-related GM info on one side, and fantastic Ptolus art on the other.
The Ptolus GM Screen is system-neutral and useful for both 5e and Cypher System GMs.