2012 · 资料书（用于增强玩法的规则/选项）
Theorems & Thaumaturgy
An arcane supplement for Labyrinth Lord and other old-school fantasy campaigns, featuring nearly 250 spells for magic-users and expanded spell lists for Illusionists. It introduces the Necromancer, Elementalist, and Vivimancer classes, along with a Fey-themed Elf race and class. Nine arcane tomes, new magic items, elementals, dimensional horrors, and other monsters provide additional campaign content, including creatures that can be summoned with the new spells. The material is released as 100% Open Game Content.
基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）骰子（主要为 d20）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Theorems & Thaumaturgy
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。