Research (Thaumcraft 5)

Research is a mechanic added by Thaumcraft 5. In Thaumcraft 5, most of the blocks and items must be researched in order to be created.

List of clues
Eldritch Mobs are: Most mobs in the Outerlands.

Eldritch Bosses are: Crimson Praetor, Eldritch Construct, Eldritch Warden.