2004 · 资料书（用于增强玩法的规则/选项）
Libellus Magnus: Metamagic & Counterspells Feats
This d20 supplement adds 20 feats for spellcasters, including a new type: Counterspell Feats. Metamagic options alter spells with effects such as blinding, reducing, or changing their energy, while Counterspell Feats add effects such as deflection and reflection. The game master decides which material to include in a campaign.
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 Libellus Magnus: Metamagic & Counterspells Feats
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。