When I was last in the halls, Talon King Ikiss carried Terokk's Quill with him, as a sign of his authority. He probably still carries it to convince his followers that he is Terokk reborn.

My brother, Darkweaver Syth, wore Terokk's Mask while leading the Sethekk rituals.

As for the Saga of Terokk, it is kept within a circle of runes in the great vaulted chamber just outside Talon King Ikiss's own.