The Sigmarabulum is a colossal ring of gleaming metal that girdles Mallus, the broken core of the world-that-was, spinning in the star-strewn heavens of the Realm of Azyr. Wrought by the hands of gods and master-smiths, it is at once foundry, shipyard, and sacred temple, the greatest single work of artifice in all the Mortal Realms.
Upon this endless ring stand the Six Smiths' forges and the fateful reforging chambers, where the souls of slain Stormcast Eternals are drawn back to the heavens and hammered anew into immortal warriors. Here Sigmar's chambers are mustered and his Stormhosts armed before they are hurled down upon the realms in bolts of celestial lightning. Beneath the ring's constant labour lies a quiet dread, for each reforging strips something ineffable from the soul, and the smiths know their sacred work slowly unmakes the very heroes it preserves.
Guarded by the God-King's mightiest hosts and the void itself, the Sigmarabulum has never fallen to any foe, yet it is besieged in subtler ways. The whispers of Chaos seek to corrupt its forges, and the toll of endless war strains even its immortal industry. It endures as the beating heart of Sigmar's war, the anvil upon which the defenders of Order are broken and reforged without end.