From publisher blurb: For use with the 5th Edition rules of the world's oldest Fantasy RPG. The Gamemaster Codex is a concise compendium of useful tools to use during your game. Use these rules and tools to craft stories on the fly and help your games run faster! It is loaded with charts to create quick non-player characters with stat blocks, generate locations, determine loot such as treasure and magic items, and construct interesting combat encounters with no advanced preparation.