Kaziana (Death World)

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Kaziana is a barely-cataloged Death World just off the Parino-Khazant route. It's a desolate place, with a minimal biosphere. What it does have is heavy gravity, wild weather, volcanoes and earthquakes, and freakish electro-storms. The world is, as far as can be told, fantastically rich in rare elements, but the few expeditions that have managed to land here have been obliterated in hours by freakish acts of nature.

Herisor (Death World)

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Herisoris a Death World within the Achilus Crusade's Orpheus Salient. At first glance, Herisoris a Paradise World that appears lush and ripe for humanity's incursion. The planet has a broad temperate zone, with temperatures that are ideally suited to human life. The atmosphere is oxygen-rich, the gravity is close to that of Holy Terra, and the seas and lands have lush vegetation and abundant, herbivorous fauna. No predators or parasites that target humankind have been identified. Herisoris seemingly perfect for human habitation.

But appearances can be deceiving: something is terribly wrong on Herisor. Unprotected humans will become deathly ill within weeks or months of setting foot on the planet. The cell structure starts breaking down as if affected by an accelerated aging process. No explanation for the phenomenon has ever been found. Wear protective gear is only somewhat effective; sooner or later those who spend time on the surface will wither or die, protection or no. Not even Deathwatch Astartes in full armor are immune.

Herisor has shown great resilience against the Tyranids of Hive Fleet Dagon, whose forces grow sluggish within the planet's atmosphere, then lethargic, before finally succumbing to the same unseen force that kills humans.

Meskaile (Death World, Canis Salient)

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Meskaile is a Death World located within the Jericho Reach. It forms the third in a trio of system to the trailing edge of the Achilus Crusade's Canis Salient that came under attack by vanguard elements of Hive Fleet Dagon.

Unlike the other two worlds of the triangle, Meskaile is not a Dead World. It is instead the polar opposite, a planet teeming with life, and all of it carnivorous, bloodthirsty and entirely inimical to intrusion by any form of outsider.

Vanity/Corulsiem (Death/Hive/Special World, Acheros Salient)

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Formerly a prominent Hive World known as Corulsiem, Vanity was once the capital of the Cellebos sub, second in economic and military might only to Varrus itself.

The planet was brought to Compliance during the Great Crusade by the Night Lord's 15th Chapter, and used as a staging ground for that Legion's expeditions into the Outer Dark of the far eastern fringe of the galaxy. This was at least a decade before a task force led by the Ultramarines brought the rest of the Reach into the Imperium.

Corulsiem rebelled against Imperial rule during the Horus Heresy. It was retaken by a mixed force of Ultramarines and Raven Guards and subsequently garrisoned by a Chapter whose name and Legion origin has been lost to history (they are only referred to as the Chosen Sons and the Sons of the Emperor, both of which can refer to any Astartes).

The planet endured for a while after the fall of Varrus and the birth of the Hadex Anomaly. There are mentions of a Chapter of Astartes, possibly of the 13th Founding, using the world as their base. The name of this chapter is [EXPUNGED] from Imperium records, but Barotta has reason to believe they may have been Sons of Xandor (if so, they may have been present in the Reach at several points in time, during the Great Crusade/Horus Heresy and the Fall).

During the long millennia of the Jericho Reach's Age of Shadows, Corulsiem was riven with internal division and strife, which eventually devolved into a global atomic conflagration. This left the planet a barren, radioactive and haunted wasteland of shattered hive cities and fallen grandeur. Only mutants and worse dwell here now.

Of particular interest are the violent temporal vortexes that surround the world. Ships traveling here can find themselves transported, not through, space, but time, to an age when Corulsiem was a rich and prosperous port. It is believed that at least one Rogue Trade made a fortune trading with Corulsiem-from-the-past. Until the Inquisition got to him that is.