Jason Carl recalls his introduction to role-playing games: "Some junior high buddies back in my home state of Maine first introduced me to roleplaying in 1980... we played Keep on the Borderlands. From that moment on, I was totally and irreversibly hooked." Years later, be began doing freelance design for White Wolf and Dungeon magazine. After working as the Policy Director for Organized Play for the Magic: The Gathering game, Carl became a member of the Wizards of the Coast R&D team, designing adventures and modules for the Dungeons & Dragons game: "Both careers have their rewards... but I've wanted to be involved in RPG design since I was fourteen - after all, I still remember rolling my first d20. So I couldn't pass up the opportunity to make the switch." When the D&D third edition was released, Carl was the designer chosen to begin the process of adding detail to the character classes in the supplement Sword and Fist; he felt that this book "is important because it establishes the model for those that will follow it".