Astral Storm

AKA: malice storm, soulstorm, active haunt
A weakening of the fabric that separates the physical world and the Astral Plane brought on by the will of a powerful entities within the Astral Plane, known as Demons. In the Astral Plane, energy is formed by the collective thought's emotions and beliefs of beings in the real world. Negative energy, known as Malice, can be consciously (or unconsciously) controlled by the imaginations of those who are experiencing intense negative emotions or sensations, which can form into Demons. Most of the time, these storms occur unnoticed by most people, and remain harmless as long as they are contained within the astral plane. However, entities from the other side can temporarily escape into the real world, appearing as incorporeal apparitions, which can be seen and communicate with creatures in the real world. These beings spend their limited time in the real world searching for those who are willing to serve as a vessel for their possession.

Manifestation

An Astral Storm forms when a Demonic entity successfully pushes through into the real world. They often form in areas that have a lot of Malice, since these are places where the barrier between reality and the Astral Plane is the weakest. However, an extremely powerful Demon can create a malice storm anywhere. A weak Astral Storm can occur on its own without a Demon as its creator.
Similarly to an area with a lot of Malice, a malice storm manifests as a noticeable decrease in temperature. However, unlike areas with a lot of Malice, the decrease in temperature is much more drastic, sometimes even dropping below freezing temperature, even during the summer. This often causes freak snowstorms, hail, or simply a lot of ice buildup. In addition, astral storms move around according to the will/collective will of the Demonic entity/entities who created the Astral Storm. These demons will target places where there is more Malice. A Demon can keep the astral storm going for as long as they want to, as long as they have a supply of Malice to use as fuel. If they run out of Malice, the storm ends. Individuals residing within the Astral Storm feel an unshakable primal sensation of fear and will often be plagued by nightmares. Within these nightmares, one feels as though they were pursued by unspeakable Demonic forces. The Demonic forces within these nightmares are themselves the actual Demons who are attempting to invade the world.
Within an affected area, Demon from the Astral Plane can appear in an incorporeal form. While Demons cannot physically damage beings in the real world on their own and cannot directly interact with the real world in this form, they can be quite disturbing in appearance. These Demons search for a suitable individual to possess.
Since a successful possession can only occur with a person who is willing, they are quite rare. However, successful possessions will allow an entity to exert its power upon the real world and have proven to be quite dangerous. While Demons cannot directly harm anyone on their own, they can invade the mind of a sleeping person, and manifest within their dreams during a REM cycle. Within these nightmarish dreams, the Demon seeks to extract information about others in their search for suitable individuals to possess. It is worth reiterating that the Demon can never harm the dreamer in any way, except psychologically.

Localization

Similarly to areas with a lot of Malice  (haunted areas), astral storms are local to an area. But unlike these areas, they can move around, and are controlled directly by demons.

Type

Metaphysical, Astral