✧ Nightmares
The general term used to collectively refer to all inhabitants of the Tree of Mysteries, including Drifters and the Lost. Those who find themselves in Limbo become connected to the System Interface.
They are ranked as follows.
▸ Level 1–10 [Seed]
▸ Level 11–20 [Awakened]
▸ Level 21–40 [Reaper]
▸ Level 41–60 [Master]
▸ Level 61–80 [Transcendent]
▸ Level 81–100 [Great Lord]
✧ Astral Creatures
Unholy creatures that plague the forsaken lands of Limbo. They are mostly driven by instinct and rely heavily on their physical attributes, spiritual power, and unique traits to survive and hunt. The stronger varieties can develop intelligence and even territories of their own.
Their threat level is determined by their overall strength and the degree of supernatural power they possess.
▸ Level 1–10 [Spawn]
▸ Level 11–20 [Monster]
▸ Level 21–40 [Terror]
▸ Level 41–60 [Devil]
▸ Level 61–80 [Titan]
▸ Level 81–100 [Leviathan]
✧ Class
Every Nightmare possesses a predetermined Class that determines the general nature of their abilities and the path of their growth.
✧ Core
The Core is the fundamental source of a Nightmare’s existence. It serves as the foundation of their being, supplying the energy required to sustain their body, wield abilities, and grow stronger.
On the other hand, the equivalent of a Core for Astral Creatures is known as a Soul Core, which hold several usefulness and utility.
✧ Mystery
A magical ability tied to one’s Class; they are ranked based on their overall power, complexity, and potential.
■ Lesser
■ Greater
■ Stellar
■ Mythical
■ Transcendent
■ Divine
Note:
The more powerful and complex a Mystery is, the higher its rank. However, a Mystery’s rank does not necessarily determine its usefulness, as certain abilities may possess unique applications that allow them to outperform higher-ranked Mysteries in specific circumstances.
Additionally, there is a different yet extremely rare classification known as "Unique Mysteries."
These Mysteries do not belong to the standard hierarchy and possess properties that set them apart from ordinary Mysteries. Their effects, conditions, and potential can vary greatly, making them difficult to evaluate. As a result, a Unique Mystery cannot be reliably compared to a Mystery of a specific rank.
✧ Relic
Artifacts tied to the essence of the Soul. On rare occasions, they are left behind by fallen Astral Creatures, though they can also be found within the <Dark Lands> or <Limbo>. However, Relics cannot be found in the <Forgotten Lands>, as those worlds are tied to the Physical Realm, while the other two are Spiritual Realms. Furthermore, a rough estimate of a Relic’s potency can be deduced from its Tier. Although Relics follow the same hierarchy as Mysteries, not all Relics of the same rank are equal in power. In other words, a Tier V [Mythical] Relic will generally be more powerful and possess greater utility than a Tier I [Mythical] Relic.