2005 · 资料书（用于增强玩法的规则/选项）
Blue Magic (D20)
Blue magic is associated with symbols, time, and the underlying order of the universe. Practitioners manipulate spells, runes, and magical effects through an understanding of arcane metaphysics. This supplement adds three Clerical or Mystical domains, reclassifies a selection of Player’s Handbook spells within Chromatic Magic Theory, and introduces the Metamage class. Metamages specialize in controlling and altering magic, including manipulating the spells of other casters, but have a more limited range of powers than generalist spellcasters.
技能型（购买或获得技能）基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Blue Magic (D20)
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