Oinos

The top layer of Hades is a blasted gray wasteland, peppered with rough hills and rocky fields. Craters, crevasses, and canyons pock the ground. No wind stirs the dust of Oinos and no sun hangs in the sky. The perpetual gloom and heavy anticipation of a coming disaster makes a thick combination in the air that can quickly overwhelm non-natives. Vision is limited because of the graying sameness of it all, obscuring details beyond 500 feet in any direction despite the lack of natural obstacles.

Geography

Chasm of Plagues

The Chasm of Plagues, a darkness-filled gorge cut into the Gray Waste itself. The Chasm of Plagues is a jagged scar in the ground, roughly 500 feet across at its widest and almost a mile long. The sides are steep and cloaked in darkness and few know exactly how far down it goes – the shadows become a physical force, like liquid darkness, after descending a mile down. Strange gray moss and fungi cling to the rocky sides which are climbable by an experienced traveler.
The moss and fungi supposedly grant creatures resistance or immunity to Oinos’ worst wasting disease, but there are rumors the Chasm of Plagues holds the source of disease in the plane in its depths. Few have even attempted the journey into the black chasm, and those that have and lived to tell the tale say there is a living disease of monstrous proportions that moves and flies in the shadows.

Fog Labyrinth of Cralfum

Not all of the fog in Hades is found in Niflheim. One particularly dangerous stretch of rocky terrain in Oinos descends into a shallow valley completely filled with thick, choking mists. The Fog Labyrinth actually pulls in the mist from Niflheim, so the entire area has the same Clinging Mists feature as the second layer. A tribe of undead Minotaur, retaining a measure of their former intelligence keep the Fod Labyrinth and are merciless.

Features

Oinos Wasting Sickness

Diseases are rampant on Oinos. Creature that spends time in Oinos and interacts with the natural environment. This includes drinking or falling into water, getting dirt into fresh wounds, or traversing underground. Creatures in these circumstances must make a DC 15 Constitution saving throw or contract the wasting disease of Oinos. The wasting disease has four stages.
The first stage starts at infection, and the victim loses 1d6 points of Charisma. These lost ability score points only return when the disease is cured and the victim has spent a long rest outside of Hades. The wasting disease can only be paused while on Hades, but it can flare up easily, forcing the victim to make additional saving throws as if they were contracting the disease for the first time. In these circumstances, the disease skips previous stages and moves to the next.
For most victims, the second stage of the wasting disease occurs at the next long rest after the onset. The victim automatically loses 1d6 points of Dexterity and Strength (roll separately for each) as the disease quickly attacks the muscles. The third stage is far more insidious – it strikes after the next long rest as the victim’s skin becomes paper-like, gray, and flakes off in great chunks. The fourth and final stage occurs 1d6 hours after the third stage, and results in death.