Taint

"Some dark presence watches by my bed. The awful image of a nameless dread. "A word that covers a great many dark and evil things in the world, Taint is considered an evil malevolent power that corrupts all things that remain in the dark. People, animals, and to a certain extent even places warp and distort in the dark. A person or animal that has succumbed to this evil power is known as a Voider, a creature often with little to no thought, filled with rage, bloodlust or wicked intent. It is thought that the only treatment available for a Voider is a a swift death. Both the undead and all forms of aberrations fall under the general category of Voider, though it has no strict definition across all peoples.

There are those few who embrace this dark power, cultists and their ilk or summoners of evil. Most die or go mad when giving themselves over to this power directly, so they are known to try and manipulate others or the bodies of once living things to do their dark bidding.

It is not entirely clear to their followers, but the Gods themselves consider Taint as a direct enemy, and are known to whisper guiding words to uncover the plots and dens of cultists.