2004 · ソースブック（プレイを拡張するルール／オプション）
Red Magic (D20)
This supplement presents Red as the colour of fire, power, light, heat, motion, and energy within a theory of chromatic magic. It introduces three new clerical or mystical domains and reclassifies a selection of Player’s Handbook spells, adding effects to align them with the theory. It also includes the Crimson Battlemage, a specialist spellcaster who draws directly on the power of Red. Combining elements of cleric, sorcerer, and wizard, the class focuses on offensive magic, combat prowess, and manifestations of energy, fire, and motion.
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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