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[[File:PICFILE -DA1683257.jpg|thumb|200px|Unknown Chamber holding the '''Heavenfall Blades''' and the legendary [[Lion Helm]].{{Fn|6}}]].The weapons were crafted using a single block of jet-black obsidian; according to Chapter lore, the block had formed the core of a meteorite that struck [[the Rock]], the Dark Angels' mobile [[Fortress-monastery]], in orbit around the feral worlds of [[Al Baradad]].{{Fn|1a}}{{Fn|6a}}

The mightiest of these blades is the [[Sword of Secrets]], traditionally wielded by the [[Dark Angels Supreme Grand Master|Supreme Grand Master]] of the Dark Angels, while other portions of the meteoric obsidian were also used to craft blades for other Masters of the Chapter. It is said that some of the obsidian was sent to the other [[Unforgiven]] Chapters so that their highest leaders may wield weapons crafted from this substance.{{Fn|1a}}{{Fn|6a}}

**[[Fellbane]] — Formerly wielded by [[Balthasar]], '''Keeper of the Unseen Ritual''' and Master of the [[5th Company (Dark Angels)|Fifth Company]]. killed in the wake of the opening of the great rift.{{Fn|2}}{{Fn|6a}}

**[[Sword of Sanctity]] — Originally carried by Grand Master [[Orias]], leader of the Disciples of Caliban. It was lost in battle but recovered recently by [[Nakir]], Grand Master of the [[Consecrators]] (currently Chapter and offered by him to Azrael. Azrael refused the gift, stating it belonged to [[Nakir]])., who wields it now{{Fn|3}}{{Fn|6a}}