From Warhammer 40k - Lexicanum
The Spineshiver Blade is a powerful relic of the Black Legion. Believed to have been formed from the spinal column of the Keeper of Secrets K'alith the Prurient, the Spineshiver Blade reverberates the essence of the Daemon's final death throes.
- 1: Black Legion - A Codex: Chaos Space Marines Supplement (E-Book) pg. 118