Nebulite

Nebulite ore is a metal ore found upon the planet Nebulan. It is a very strong and durable substance, second only to Ghraesidium. Nebulite unlike typical metals has a special property about it in that it stores shadow energies, even in raw form. A small nebulite rock is able to hold at least half the energy a typical mage can wield. When forged into a weapon, armor or otherwise and depending on how much Nebulite was used, it can potentially carry more energy than its wielder can hope to have on their own. The most notable Nebulite creation is Nebulan, Blade of the Shadow.

Nebulite is a conscious ore and is able to think for itself due to microscopic entities hidden within. The microscopic entities inside are able to withstand ridiculous temperatures and overcome any form of disease, plague or otherwise. The metal is capable of self-repair over a long period of time, however the process can be sped up immensely by simply repairing it with more Nebulite. Nebulite stores magic whether it's wielder wants it to or not and can overload if said individual is not careful with the metal. Nebulite intentionally overloads itself to unleash devastating attacks.

Refining
Nebulite is a tough, durable and unbreakable metal (through any normal means). Refining Nebulite requires extreme temperatures and extreme strength. The Forbidden's work-around generally involves a disintegrating plague pot, which helps to refine this unbreakable metal. Skeletons are required to operate these special "forges". The plague itself doesn't harm bone. Once refined and converted into bars, it must be dipped within the forge again to heat up and then be usable on an anvil. Forging armor out of Nebulite requires a great amount of body strength again, usually of orcish or stronger.

Magical Properties
Nebulite is a unique metal. Any weapons or armor forged from it grant a great deal of magical immunity as Nebulite is absorbant of magic. While unexplained, storing magic in Nebulite metal is generally considered a great advantage, but must be managed carefully since it can still overload. A full set of Nebulite armor could store at least ten times the amount of power any average caster can have. Strangely, the magic stored within Nebulite is operated through the mind and willpower instead of manapools. Because of this, even those that are not gifted with the power of magic can use this armor and its magical properties to their advantage.

The wielder of Nebulite material must first open their mind to the metal itself first in order to utilize its capabilities. The Nebulite has to detect said opening and invade the mind of the individual in question that wishes to control it, should the wielder not have strong willpower, the Nebulite will instead turn on them and consume their life and if they're undead, the magical properties holding them together to live. Should the willpower be great enough, the Nebulite will submit and allow its usage whenever the wielder deems fit through sheer willpower.