Question: Who published a supplemental sourcebook to the core rules of the second edition of the "Advanced Dungeons & Dragons" designed by an American game designer at a company where he was employed for over fifteen years?
Sentence (from "Book of Artifacts"): This book, published by TSR, Inc. in 1993, details 50 different "artifacts", special magic items found within the game at the Dungeon Master's option.
Relevant evidence: No