Helm of Janus
From Warhammer 40k - Lexicanum
The Helm of Janus is a relic of the Grey Knights.[1]
It is unknown if this helmet was once worn by the first Supreme Grand Master himself, for psychic interrogation of its oldest spiritual imprints reveal the paradox of more than one original owner. Via archeotech auto-archival systems, the helm has catalogued every catechism learned by the Chapter over millennia, allowing the wearer to combat the daemonic with a barrage of arcane rituals.[1]
Sources
- 1: Codex: Grey Knights (9th Edition), pg. 74