Thaumcraft Flux, Taint, and Eldritch Magic

Using magic is not without consequence. Spell failures and crafting instability generate flux, polluted magical energy that builds up in the aura. Flux Condensers capture and process flux before it becomes a problem; if flux is left unchecked it spreads as Taint, corrupting the landscape.

Taint manifests as blocks like Tainted Soil, Tainted Rock, Crusted Taint, and Swollen Taint, along with Taint Geysers that erupt and Fibrous Taint plants. Tainted biomes are hostile to ordinary life.

Warp is a measure of how much forbidden knowledge a thaumaturge has absorbed. Deep exploration, eldritch research, and dangerous items raise warp, which unlocks the Eldritch research branch but also inflicts negative effects, hallucinations, and visual distortions. Eldritch content includes ancient stone structures, the Crimson Cult and their cultists, Void Seeds, and other high-risk, high-reward magic.