2012 · Kaynak kitap (oyunu geliştirmek için kurallar/seçenekler)

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.