Rust
This article is a Work in Progress and will be finished soon™
On the 3rd of Reaping, the first reports of the air turning orange arrived, and soon enough the entire archipelago was covered by an orange filter that announced torment for almost everybody that dared dwell too high above ground level. As the orange "fog" settled a couple of meters above ground, those that were in contact with it started showing the signs of rust, the name given to the disease caused by the events of the catastrophe that became known as The High Rust.
Being Corroded
Acquisition
Despite the initial panic towards the refugees from the high settlements, it was soon confirmed that the rust was non-contagious.It was acquired, seemingly at random, by staying in contact with the orange air. Brief encounters were generally harmless, and several days of exposure were generally needed to trigger the condition.
There is no consensus on whether drinking or bathing on the orange-tainted water could trigger the condition if it was gathered or used below the affected altitude. The Rust could affect any matter, including living or dead creatures, plants, minerals or structures.
Living beings were the most affected, with the condition progressing much faster than on buildings or terrains.
Symptoms
A living being or material affected by the rust would present the condition as dry, copper-coloured ulcers that would flake off or slowly degrade into dust and would not close, looking very similar to the rusting of metals.The condition developed fast, and entire extremities could crack and fall in a matter of weeks. The ulcers would close up the arteries and veins on their way, so blood loss could turn out to be minimal even for these massive amputations. The rust's ulcers start on the surface of the skin or material and generally expand to the sides way faster than they dig down, so a person could have had most of their skin affected before any of their internal organs would be compromised, though the actual development of the disease varied case by case. Rust would generally kill by corroding the internal organs of a person, destroying key points of the body such as the brain or arteries on the neck, making the sufferer unable to avoid danger, or by opening the path for opportunistic illnesses.
Treatment
No treatment was found to reverse the effects of the rust. Leaving the high terrain and getting as close to sea level as possible could stop the progress of the disease, with higher chances the earlier the sick person would escape the orange zones, reaching around a half chance of a full stop on the spread of the ulcers. For those that stayed in the affected areas or whose disease would continue progressing, the rust would become almost invariably fatal.Surviving the Rust
After the end of the High Rust, around an 80% of those affected would see their disease stop expanding. While many would still die due to the complications of it, many survivors remained and were able to continue their lives. Survivors of the rust kept their existing patches of corrosion as sequela, with the ulcers staying day and flaky and requiring ointments and bandages to diminish the sensitivity and pain of the flaking. These areas keep the colour and texture of actual rust, though with the passing of years some of the patients see the ulcers very slowly fading in intensity and even getting smaller. Many affected people had to choose amputation of limbs or other body parts to avoid bleeding, chronic pain or detachment of the skin, with the disease leaving hundreds of disfigured victims covered in bald patches.Cultural Impact

Queen Tesel by Naelin
The start of a new era was declared after the rust killed the Queen of Merthiorn as the first of many other deaths among the rich and powerful. Many organizations and societies needed to restructure due to the Rust, which also tipped the scale of many political issues, turning into an important factor for the Civil War on Karte, the Purge of Morals and other smaller conflics.
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