The Eldritch Tab is a new addition to the Thaumonomicon in 4.2. It is unlocked in stages, by gaining progressively larger amounts of Warp.

The Eldritch Tab
Content[]
- Sanity Checker.
- Wand Focus: Primal
- Eldritch Epiphany -- A flash of twisted insight that unlocks several recipes beginning with void metal.
- Void metal - A new magical metal, darker and stranger than Thaumium. Tools and armor made from it regenerate durability without consuming vis.
- Staff Core of the Primal - A staff core with the capacity of Silverwood and the vis regeneration of the elemental cores.
- Voidmetal Wand Caps - After being charged on the Infusion Altar, these grant a wand 20% vis discount.
- Advanced Essentia Storage - Allows the creation of the Essentia Resevoir.
- Eldritch Revelation - Required to access higher level Eldritch research.
- Void Thaumaturge Robes - Offers the protection of Void Armor and the abilities of Goggles of Revealing.
- Crimson Cult -- learning the secrets of the cultists who surround Eldritch obelisks.
- Opening The Eye
- The Outer Lands
- Revelations in the Outer Lands
- Primordial Pearl