[Distortion Fields]
Large areas of distorted space-time that corrupts all form of life. These fields appear randomly in different locations and will only disappear once destroyed from within, either by defeating a Herald (basically a boss battle) or by destroying its core.
From the outside, these fields look like large black domes that glow that glow red or purple. Inside the distortion fields, there is a false read sky with rifts between dimensions floating above or close to the ground. The amount of these rifts can decide the danger level of the Distortion Field.
These rifts serve as a way for corrupted beings to exit and travel within the human's dimension. Staying too long within the distortion fields can corrupt an individual, turning them into distorted beings.