Once a lush and beautiful Agri-world, Venkrous was the primary producer of most large grains for the Imperium's ancient Jericho Sector. Now twisted and warped by the rotting touch of Nurgle, Venkrous produces plants that are used to create vile poisons and hallucinogenic drugs.
Wanting to create a planet more to his liking, the Plague Father pushed the land masses together until they created three continents where once there were nine.
The next step was to move the clouds out of the way so that all could look upon the glory of this creation. The clouds were moved towards the poles and turned a shade of pink so as not to distract the eye from the crowning achievement.
The seas themselves, once a beautiful shade of blue, now run green with pus. Any wildlife that survived the change found itself mutated into strange new forms that spread the unholy plague to every corner of the planet.
The Human population of the planet was hit hardest of all. Those that staunchly refused Grandfather Nurgle's pestilent embrace were the lucky ones. They were merely executed, while those that quickly turned their worship to the Great Diseased One found themselves rewarded with a form of leprosy.
Their limbs would quickly atrophy and die off over a period of seven solar days, but on the eighth day, the limbs that were lost would begin to grow back. The cycle repeats for eight solar months out of the year, but in the ninth month, the regeneration does not stop at simply regrowing the lost limbs.
During that month, the limbs become bloated and grotesque mockeries of what they once were, until the last day of the month when they mercifully explode, spreading the plague amongst any who have not been gifted with it.
- Deathwatch: The Achilus Assault (RPG), pg. 88