The Staff of Ulthamar was a famous psychically-impregnated staff wielded by Farseer Eldrad Ulthran of Ulthwé. It was similar to a Witchblade in combat, but had the added benefit that its damage would ignore a foe's armour to assault the being within directly. This made the Staff of Ulthamar an incredibly formidable close combat weapon, capable of carving through even Abaddon the Despoiler's ancient Terminator Armour during the titanic clash between the Chaos Lord and the Farseer upon the world of Andante IV during the 13th Black Crusade in 999.M41. The Staff of Ulthamar also served to channel Eldrad's already potent psychic powers into a force to be reckoned with.
It is assumed that the Staff was lost, along with Eldrad, aboard a Slaanesh-possessed Blackstone Fortress high above the Imperial Fortress World of Cadia during the final battle of the 13th Black Crusade.
- Codex: Eldar (4th Edition) pg. 51
- White Dwarf (UK) 266, "A Clash of Titans", pg. 104
- The 13th Black Crusade (Background Book)