Rhaegan

Rhaegan (ancient relifica equivalent of Raagan or Rhaagan, meaning Death), oftentimes reffered to as the Void, the Observer, the Hole at the center of all, Nonexistence and the End, is the supermassive black hole at the center of the Arsgri universe. This black hole is expected to one day devour the world as a fitting end to the cycle of existence as it is believed to be the remaining twisted core of the star Shir, which in its supernova created the universe. Void cults or cults of the Observer worship this Entity and believe it to be sapient and omniscient, oftentimes comparing it to an all-wise benevolent panopticon. Opinions on if the Observer is a living being wary between the archei general populace.

Influence
As the most powerful object within the universe, Rhaegan has a tremendous amount of influence of many kinds. For example, it is often credited for the passage of time as its irregularities within Arsgri have been found to relate to the Observer’s own movements and distance. Often mentioned is the Observer’s ability to warp areas, locations and creatures “close” to it (this distance doesn’t have to be physical) and change their nature. One of these examples are the many Watcher springs (in relifica referred to as Gristr) scattered throughout Arsgri, which have limited healing power as well as carrying harvestable and useable Void energy, though prolonged exposure ultimately proves to be harmful, even lethal.

Possibly the most well-known example of a water body transformed by the Observer is the Elder Ocean, which at its peak carried enough power to sink and devour anything that made contact with it along with seeping energy from creatures daring to come close to the unnaturally still water. Elder Ocean carried its own energy as well, and rightfully belonged into the very few true places of power before New Vitravnen’s reign, even if its power lay mostly dormant. With the Sealing, this quality almost entirely dissipated, though the Elder Ocean’s waters are still not safe to drink.

Creatures influenced by the Observer, which survived such influence are few and far between, containing mostly the gariette (particularly Grand Lie, N’ngayah and Ascintiati), although flora and fauna transformed and dependant on the Void exists and prospers in ancient sites and shrines. The Voidfish are only a small part of this unique group.

Notable examples of creatures changed by the Observer are especially the new inhabitants and guards of the Watcher’s peak ruins, all of whom are Voidbeings, similar to gariette but with highly localized and specific powers. One of these, Aza Akorey (the First Eye) played a crucial part in the Third Divine War.

the Bell Theory
Also known as the Hat Theory, the Bell theory describes the shape of Arsgri in relation to Rhaegan as an enormous "bell". This explanation originates from the study o the behaviour of time within different parts of Arsgri (specifically the major temporal difference between Deep Arsgri, Lower regions and Upper Arsgri). In the former, time tends to go marginally quicker and behave in a fluctuating manner - shifting (in comparison to 1 second in Koriatty) from 3 million years/1 KRY second as the recorded maximum to 0.0014 second/1 KRY second as the recorded minimum. More than 5 years/1 K to 10 000 years/1 KRY second is typical behaviour, although the range tends to sway more towards larger numbers.

In Upper Arsgri, the deviations from the norm of 0.003 second/1 KRY second are minimal, ranging from differences impossible to measure but assumed in theory, and 0.5 year/1 KRY s. In Lower Arsgri, the fluctuations stay mostly within the range of 0.004 second/KRY s to 5 years/KRY s, but another behaviour has been observed, often called Rippling, in which an unexplainable major shift occurs. Ripples in Lower Arsgri effect some border regions and appear incredibly random and often impossible; one of these, the so-called Trapper Hole stretched the region of Tarkyry to a concerning all-time maximum of 5.16 trillion years/1 KRY second for a period of 2.3 KRY years. The Rippling is one of the many different points often used to discredit the Bell Theory, as the Bell Theory assumes Arsgri as a whole has a relatively flexible but yet compact character, whereas the Rippling paints the picture of only loosely connected parts that can be ripped out or in at will.

The Bell Theory has existed for an incredible amount of time, first appearing in many scripts done by Voidlings and Void cults in places like Fog's Edge, and seeing renaissance after the falls of both versions of Vitravnen, becoming popular only recently through the works of Chorach the Architect, or Quirrel of the Echir Library who first popularized the alternate title, Hat Theory, claiming the theorized shape of Arsgri looked: "like a giant wonky hat." Many attempts have been made at measuring the specific distance of Arsgri's deepest point (at Fog's Edge) to Arsgri itself, but they have largely failed and resorted to approximation. The reasons for this are unclear.

Void-born gariette
Some gariette have been ascended directly or indirectly via Rhaegan's power and form; all Ascensions, of course, relate to Rhaegan, however, in this case this relation is more pronounced. The first would be N'ngayah's ascension via the failed Voidgate loop maneuver. where his body was torn apart by void itself in the latter half of the maneuver and eventually underwent Ascension during the already doomed escape, leaving the Abyss and crashing with roughly the power of a hydrogen bomb into the face of the Fog Plateau, creating the Fool's crater. The second is based on the record of asCintiati's Ascension, during which, as claimed, the black hole offered him the choice between Nonexistence and Ascension; in this case, the latter option would've have allowed him to save his world by becoming an eternal martyr unable to even rejoin it again. AsCintiati accepted.

Voidkin
Not much is known about this class of creatures beyond their enormous power and the fact that it nearly borders on the powers of the gariette with completely differing qualities; because of this, Voidkin are categorized separately, and given their powers appear in a much more narrow fashion, they are also not placed on the same level as gariette. Voidkin seem to be the only creatures with a black hole-based soul form, which manifests violently, taking parts of their existence away from them in exchange. They all are capable of becoming black holes completely, and their flesh forms appear to be hollow skin, holding a black hole within.