The Eldritch Curiosity is an item added by Thaumcraft 6. When used, it will add 50-100% observation progress and 33-50% theory progress in Eldritch, as well as 50-100% observation progress and 33-50% observation progress in a random category. In addition, it adds 5 temporary and 1 normal Warp to the user. It can be also used in theorycrafting for 25-30 Eldritch progress.
It is currently unobtainable.