Last Memory of the Yuranthos
The Last Memory of the Yuranthos is a powerful relic of the Black Legion. This azure gem contains the essence of the Yuranthos and their powerful Psyker, Mk'ell. The user can unleash a fragment of their power upon their foes, though it is not without risk.
- 1: Black Legion - A Codex: Chaos Space Marines Supplement (E-Book) pg. 118