Forge of Souls - History: The Forge of Souls exists entirely in the beyond, deep within the Formless Wastes of the Realm of Chaos in the Immaterium. This hellish forge is perpetually cloaked in a pall of black, oily fumes, rank with the acrid stench of forbidden metallurgy, dominated by a cacophony of strident grinding and the wailing of uncountable tortured spirits. This accursed place is where the blind, ever-mutating Daemon forge-masters of Chaos in service to Vashtorr the Arkifane eternally hammer at their creations in cyclopean smithies. Vashtor is the Daemonic demigod of inventors, engineers, scientists and artisans. He is curiosity and innovation shorn of moral conscience and driven to its darkest extremes. Empowered by the ceaseless inquiring of mortal minds, Vashtorr embodies the mortal need to understand and then enslave natural forces to one's will, and to eventually achieve technological apotheosis at any cost.The black fires and infernal processes of these cavernous laboratories are fuelled by the souls of the damned and kept roaring by colossal screaming bellows, manned by legions of semi-sentient nightmare creatures. From the dark bowels of the Forge of Souls come all manner of hideous and unholy weapons. By means of the perverse technologies of the artisans of Chaos, Daemonic energies are fused with arcane metals to create great jagged blades, weeping swords, barbed steel whips and other potent weapons and talismans, to be used by the Daemons in the endless battles of the Great Game.But as lethal as such weapons are, they are mere toys next to the greatest construct of the Daemonic smiths. Amongst the most potent of these is the terrifying Daemon Engine known as the Soul Grinder, but countless other types, many entirely unique, exist. These terrifying creatures are the fusion of the most powerful of Daemonic entities with machines of war that originate from outside the lmmaterium, but already have felt the touch of Chaos. These are often the wrecked remains of great Daemon Engines and other possessed vehicles, like the mighty Battle Titans of the Legio Mortis, or the rampaging Defilers created by the Traitor Legions. All this ruined materiel is absorbed into the Warp as the flotsam and jetsam of a galaxy at war, flowing from realspace into the Immaterium through the Eye of Terror, the Maelstrom and the other loci in the galaxy where different realities touch.In the ash plains outside the Forge of Souls battle never stops, as many amongst the higher ranks of Daemonhood vie with each other and duel for the chance of being the one to fuse with the mechanical constructs and become a Soul Grinder. This is because, unlike a possessed mortal body, these steel and ceramite shells can sustain a Daemon in the mortal universe for Terran decades, even centuries. During this time, the shape of each Soul Grinder will change, as their metal body slowly becomes more similar to the type of Daemon possessing it.Such a precious armoured form does not come for free. Great is the price that the Daemonic brokers and artisans of the soul forges invariably demand of each new Soul Grinder in return for the unholy incarnation. Before being released, the Daemon must swear the three "Oaths of the Iron Pact" to Vashtorr and the Masters of the Forge. First, that all of the mortal souls harvested by the great blades of the Soul Grinder will be used for the fuelling of the Forge of Souls. Second, that the wrecked remains of all of the war machines destroyed by the adamantium claws of the Soul Grinder will be offered to the Forge. Finally, and perhaps most significantly, that should one of the Chaos Gods attack the Forge of Souls and try to rule over it, all Soul Grinders will fight in its defence, discarding all of their previous loyalties to any of the four Great Powers of Chaos.When a dark magus or Warpsmith enacts the rituals of summoning and calls upon the services of an incarnate Daemon Engine, it is likely that the source of the monstrosity is the Forge of Souls, and that every life the machine-Daemon-thing reaps condemns yet another mortal spirit to the service of Vashtorr and an eternity within its searing furnace.