The ghosts of Ravnica's dead linger. Agyrem, commonly known as the Ghost Quarter, is an area of that city-plane where many spirits have collected, going about their business like nothing was amiss—except that they're dead. Planeswalkers who travel here may notice the spectral phenomena in the area; you may find that your creatures return to you instead of rotting in the dirt. You may even notice that the strictures and laws surrounding the tattered Guildpact still have power to prevent conflict in that district.
Agyrem originated as a planar blister on Ravnica. It was the site of an epic battle between the angelic forces of Razia and her Boros Legion and Szadek's spectral army. Agrus Kos, formerly a wojek of the Boros, perished during the conflict, but was bound in service after his death. He captured the spirit of Szadek. Afterwards, Kos became the warden of Agyrem.
Agyrem becomes a layer over the entire plane when the rift known as The Schism is healed. It becomes a sort of district of its own under the protection of Agrus Kos and is where Ravnican spirits - including Szadek's - dwell.
The overlay of Agyrem remains on Ravnica until the Mending, which causes it to become distinct and removed from Ravnica—a kind of "metaplane." Little is known about Agyrem now; its whereabouts in the Multiverse are a mystery.
