Prosperine Spirestave
From Warhammer 40k - Lexicanum
Prosperine Spirestaves were a type of Force Weapon used by the Thousand Sons during the Great Crusade and Horus Heresy.[1]
These blade-tipped staves were often carried into battle by the Librarians and later Sorcerers of the Thousand Sons. They wielded them with deadly ease while channeling their psychic power into them.[1]