2018 · ソースブック（プレイを拡張するルール／オプション）
Forbidden Knowledge
This supplement expands the wizard class with seven arcane traditions centered on dangerous magical research. Each tradition grants access to sinister abilities, including demon summoning, wicked curses, and contact with powers beyond reality. These options offer powerful and versatile tools at the cost of madness, corruption, or other forms of spiritual ruin, allowing player characters to pursue forbidden knowledge and eldritch magic.
属性／ステータス制（STR、CON、PERなど）レベル制（XPを獲得してレベルアップ）ダイス（主にd20）
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。