Created from a fragment of the God Killer blade and embedded with one of the gemstones. This blade was entrusted to “an ancient warlock named Laurentius” with him “promising to protect it in return for access to it for his own study and research”. It has been handed down for generations to his descendants before eventually being stolen from the Countess Laurent by Sabine.
This weapon no longer exists, it was reforged into the God Killer Blade by Gof Cadarn.