Necrobia is a small nation of mages hidden in an alternate reality. Necrobians are initially from earth and recruited from various persecuted populations of sorcerers, druids, clairvoyants, witches, and shamans. They are trained in magics from the Necrobian Lexicon, an ancient text from this alternate reality, making their magic clash with more common forms of spellcraft. Use of this magic gradually turns the skin pale and turns the blood blue-violet, leading to the terms Blueblood, to describe Necrobians, and Redbloods, a derogatory term for baseline earthlings.
Necrobia's founder, Giatia, a goddess of light and life from a lost pagan pantheon, happened upon a Cinnabar Beacon, a disc of cinnabar that -- when placed on the ground in the correct fashion -- will transport one to another reality. Giatia accidentally activated the beacon and was transported to an apocalyptic wasteland. The sky was red and strange runes decorated the sky in place of stars. There was no flora, and undead monsters seemed to rule the land. She wandered for decades, searching for answers and battling the creatures abound.
The Necrobian Lexicon
In her wandering, she discovered a strange book with clockwork arms out of its spine. After learning how to operate the book, she learned that it contained the magics of her exiled pantheon expanded massively. She spent centuries studying the text and learning each spell, except the forbidden ones. In her study she learned to conjure Mercuric Barriers, which prevented entry from this world's haunts, how to generate such barriers with Statues of cinnabar, how to use her powers of life to grow food and cleanse water from the wastes, and, most importantly, how to leave this land and return to baseline earth. She made a few statues, generated a mercuric wall, placed the lexicon on an alter within the walls, and returned to central Europe, centuries after she'd left.
Founding of Necrobia
When she returned, it was during an inquisition by both the church and the Chinese empire. Specifically, the Order of the Chalice, an order of crusaders from the vatican, were hunting down descendants of her followers, bluebloods, those genetically predisposed for the use of her magics. Giatia knew what she had to do. After collecting more Cinnabar beacons, she gathered bluebloods, one-by-one, and brought them to the haven she had created in the alternate wasteland. She established a nation, Necrobia, named after the texts it was founded on. The nation was governed by a council of 5 mages of various sects, with Giatia as the ArchCounciler for life, and since she is an immortal goddess, this meant she had veto power for all time.
The hidden nation thrived for centuries, growing from recruits from genetic bluebloods and even persecuted pagans and druids without "the gift". Anyone could learn Necrobian magics, but those without the genetic predisposition would struggle to master spells, and generally don't rise to positions of prominence in Necrobian society. They also accepted "catalyzers" who used Relics, objects with magical power, or various creatures to achieve spellcraft, although there is prejudice against those who rely on such things.
Giatia continued to guide the nation, slowly expanding the Mercuric Wall, and warding off the Haunts of Necrobia. Her vision was for this nation to persist as a safe haven for spellcrafters away from the persecution of baseline earth, a moderate an incrementalist vision....