Outcast Silver Raiders is a blood-drenched occult medieval roleplaying game in the old school tradition. The referee has the most exciting job at the table: they describe the world and everyone in it, and interpret the rules for the other players. This book contains advice for beginning and seasoned referees, extra and optional rules referees can bring into their campaigns, a fully illustrated list of occult rituals usable by any character class, dangerous artifacts, magical items, rules for six classic fantasy races, rules for seven additional character classes, and a list of divine magic spells. This Referee's Compendium is the essential resource for running an Outcast Silver Raiders campaign. This book is intended for an adult audience.