2005 · ソースブック（プレイを拡張するルール／オプション）
Green Magic (D20)
A sourcebook for a chromatic magic system in which Green represents animals, plants, water, and air. It presents magic as the manipulation of nature rather than coexistence with it, allowing practitioners to alter environments, command animals and plants, and imitate natural characteristics. The book includes three new clerical or mystical domains, a reclassification of selected Player’s Handbook spells with additional effects, and the Animist class. Animists command the spirits believed to inhabit natural things, combining specialized spellcasting with druidic abilities.
スキルベース（スキルを購入または獲得）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）
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