2018 · ソースブック（プレイを拡張するルール／オプション）
Astral Plane
This sourcebook presents the Astral Plane, covering travel, survival, navigation, hazards, and notable phenomena such as color pools, dead gods, psychic winds, and time ripples. It details powerful entities, thirteen locations and treasures, including Tu’narath and the River of Memories, and provides adventure hooks, random encounter tables, and a table of astral travelers. The book adds ten monster statistics, including the astral deva, astral dreadnought, psurlon, and soul leeches. Player options include the College of Memories bard, Way of the Silver Lantern monk, Mind Stalker rogue, and Astral Drifter background.
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ダイス（各種）ダイス（主にd20）レベル制（XPを獲得してレベルアップ）
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。