Dropped by (***no spawn table):

• Acrylia Caverns
• ***a restless burrower (5.9%, 0.12 avg drops per kill)
• ***an escaped burrower (5.9%, 0.12 avg drops per kill)
• ***a grimling high priest (5.9%)
• ***High Priest Gakkernog (5.9%)
• ***A Possessed Warmaster (5.9%, 0.15 avg drops per kill)
• ***A Possessed Underking (5.9%, 0.15 avg drops per kill)
• Sanctus Seru
• Lord Inquisitor Seru (5.9%)
• Ssraeshza Temple
• ***Arch Lich Rhag`Zadune (5.9%, 0.18 avg drops per kill)
• ***a glyph covered serpent (5.9%, 0.15 avg drops per kill)
• ***Vyzh`dra the Exiled (5.9%, 0.15 avg drops per kill)
• ***Vyzh`dra the Cursed (5.9%, 0.18 avg drops per kill)
• High Priest of Ssraeshza (5.9%, 0.16 avg drops per kill)
• Rhag`Zhezum (5.9%, 0.15 avg drops per kill)
• Blood of Ssraeshza (5.9%, 0.18 avg drops per kill)
• Xerkizh The Creator (5.9%, 0.16 avg drops per kill)
• ***Rhag`Mozdezh (5.9%, 0.15 avg drops per kill)
• ***Emperor Ssraeshza (5.9%, 0.18 avg drops per kill)
• Grieg's End
• ***Grieg Veneficus (5.9%, 0.24 avg drops per kill)
• The Deep
• ***A burrower parasite (5.9%, 0.24 avg drops per kill)
• Thought Horror Overfiend (5.9%, 0.16 avg drops per kill)
• The Umbral Plains
• ***Doomshade (5.9%, 0.15 avg drops per kill)
• Akheva Ruins
• The Insanity Crawler (5.9%, 0.12 avg drops per kill)
• ***Shei Vinitras (11%, 0.41 avg drops per kill)
• The Itraer Vius (5.9%, 0.15 avg drops per kill)