2004 · ソースブック（プレイを拡張するルール／オプション）
The Ultimate Mystic
A comprehensive guide to using mysticism in HERO System campaigns, covering fantasy settings and genres that do not normally include magic. It explains how to create mystic characters, presents optional character-design rules, and explores alternate planes of reality and guidelines for building a Multiverse. The book examines magical traditions including Hermetic Theurgy, Voodoo, Rune Magic, Necromancy, Alchemy, Taoist Theurgy, Shamanism, and Sadhana. It also describes angels, demons, faeries, gods, ghosts, shapechangers, and other beings drawn from folklore and mythology.
スキルベース（スキルを購入または獲得）ポイント制（ポイントを割り振ってスキルや能力を得る）ダイス（主にd6）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。