Azyr is the highest of the eight Mortal Realms, a firmament of drifting constellations, thunderheads and mountains that pierce the clouds. Coalesced from the celestial wind of magic in the world's dawning, it became the seat of Sigmar Heldenhammer, who raised Azyrheim, the Eternal City, upon its storm-wracked heights. Here astromancers read fate in the wheeling stars, and the Sigmarabulum girds the realm like a ring of hammered gold.
When the Age of Chaos drowned the other realms in ruin, Sigmar sealed the Gates of Azyr and endured a long, bitter isolation, gathering the noblest souls to his side. In that hidden forge he wrought the Stormcast Eternals, reforged warriors hurled back into the realms as living lightning to break the Dark Gods' dominion.
With the tempest unleashed, the freed peoples of Azyr marched out to reclaim the wider realms. The Cities of Sigmar trace their charters and their proud dead back to this celestial bastion. Yet even paradise is not safe: treachery festers behind gilded walls, and every soul reforged returns a little more hollow, a little further from the mortal it once was.