The Pathfinder: Second Edition GM Core Rulebook is a new hardcover book published by Paizo Inc. in 2023. Written by Logan Bonner and Mark Seifter, this book is part of the Pathfinder Second Edition Remaster Rulebooks Series. It is a comprehensive guide for game masters, featuring illustrations and rules for the popular Pathfinder RPG. This book is a valuable resource for players and game masters looking to enhance their tabletop gaming experience with the Pathfinder universe.