Terrin'ukia

From AchaeanLore

Also known as Master Blood Drinker, Terrin'ukia, Tsol'teth Destroyer, was the last Tsol'teth to fall in the War of the Deeps, when forces from Seleucar, Ashtan, and Shallam finished him off.

The artefact, Terrin'ukia's Monocle, bears his namesake.