Any Nemesis Force Weapon or 2 Nemesis Force Falchions (As replacement for Nemesis Force Sword).Psycannon (As replacement for Nemesis Force Sword and Storm Bolter).Psilencer As replacement for Nemesis Force Sword and Storm Bolter).Incinerator (As replacement for Nemesis Force Sword and Storm Bolter).The books themselves are also potent psychic talismans in their own right, with pages illuminated in silver and bound to a spine carved from the thigh bone of a martyred saint. These gnarled tomes contain the Chapter's rites of battle and detail the traditional duties of every Grey Knights rank. Every Grey Knight carries a copy of the Liber Daemonica in a ceramite case on his breastplate. Liber Daemonica - The Liber Daemonica is an enduring symbol of a Grey Knight's devotion to his mission, and contains the cardinal tenets of lore culled from the dark knowledge caged within the Sanctum Sanctorum's walls.The Castellan Champion carries out one of the most arduous tasks in the Chapter, acting as the Warden of the Blade - the keeper of the dreaded Black Blade of Antwyr. The Order of Purifiers as a whole is led by a Grey Knight who holds the rank of Castellan Champion and the title of 'castellan.' The Castellan Champion also functions as the Brotherhood Champion of the order in addition to leading its operations. Purifiers are divided into squads led by a 'Knight of the Flame' (effectively the Purifier equivalent of a Justicar). But for the Purifiers, as for all Grey Knights, duty comes before personal survival. This is perhaps scant comfort to the Purifiers, who inevitably form the Chapter's spearhead in the dark times of the 41st Millennium. Perhaps it is part of the natural order of things for there to exist a handful of spiritually unblemished transhuman warriors, whose purpose is to combat Daemons in all their forms and to ensure that the fire of victory is never extinguished. Whether this is due to some strange quirk of fate or the machinations of some higher power is impossible to say. Fortunately, the limited numbers of Purifiers have never yet been too few for the task at hand. Yet never has there been any thought of relaxing the restrictions on induction, lest the sanctity of the order be compromised. So careful is the selection that there are seldom more than a few score Purifiers within the Chapter. Purifiers recruit only from those amongst their battle-brothers whose souls are considered to be utterly incorruptible and resistant to the temptations of the Warp - even by the incorruptible standards of the Grey Knights. A Grey Knight can serve his Chapter with distinction for centuries without end, yet still this ultimate honour may well be denied him. Membership in the Purifier Order is not granted through skill, valour or a tally of grim deeds soaked in blood. There is neither training regime nor set process by which a Grey Knight can join the ranks of the Purifiers. Purifiers are dour and taciturn, and their eyes burn with a black fire that borders on fanaticism. Other intruders do not return at all, their fate a mystery.

Some Grey Knights initiates whose curiosity leads them astray return to the chambers above following a brutal beating to reinforce the lesson that the Purifiers trust not even their own battle-brothers where some secrets are concerned. This edict has proved something of a challenge to Grey Knights neophytes over the centuries. Only the Chapter's Grand Masters are permitted to enter these halls unbidden. This ensures that the Purifiers guard against the evil that slumbers therein. The Chambers of Purity lie deep below the Grey Knights' fortress-monastery on their Chapter homeworld of Titan in the Sol System, at the entrance to the ancient and shadowy vaults of Mount Anarch. In battle, Purifiers can turn their purity into a weapon, channelling it with their psychic talents to create an ethereal fire which can literally burn away the souls of their foes and reduce a fully-manifested Daemon to nothing but a memory in a few moments of blazing light and inhuman screams. They have the sacred duty to maintain the seals and bindings on the Chapter's daemonic prisoners and deal with the worst the Warp has to offer. The Purifiers stand apart from the Chapter, a secretive order within a secretive order. Only the most pure of heart and clear of purpose can hope to face the most powerful foes of the Warp. Purifiers are selected not for their skill at arms nor the glory of their deeds, but based on the purity of their souls and their single-minded devotion to their sacred purpose. Just as the Paladins embody the epitome of the Grey Knights' martial prowess, so the Purifiers demonstrate the best of their strength of purpose and founding principles.

Dawn of war 3 grey knights