Anathrax is a Daemon World within the hellish realms of the Eye of Terror devoted to Nurgle, the Lord of Plague. A lush but pestilent planet, it is covered by giant bulbous fungi made up of puffy-eyed heads that cough and sneeze a grey mucous which corrupts those who touch it. The Iron Drakes Space Marine Chapter was corrupted after entering the Eye of Terror in 321.M37 as part of the Imperial Abyssal Crusade. At some point during their sojourn in the Eye, the Iron Drakes were corrupted by Nurgle on the Daemon World of Anathrax and became the Grey Death, ready and willing to spread their plague across the stars. Another of the Chapters known as The Judged, the Argent Hammers, was also corrupted on Anathrax and renamed themselves the Talons of Anathrax.