|“||Forging Material. Found rarely as a drop and by deconstructing rare equipment.||”|
— Item Tooltip
Eyes of Q'bthulhu are a type of forging item that is used in forging and upgrading Shadow and higher rarity items. They can be obtained from using the Loot Collector on Relic and higher rarity equipment, commonly from Shadow Caches or from killing Shadow Giants.
The name 'Q'bthulhu' is a portmanteau of the word 'cube' and Cthulhu.