Once in the time before the Rupture there where those born with a power. By using it they unleashed a terrible potential. Aimed at greatness they built a magnificent civilisation. knowlegde, arts and refinement grew to people to a new standard of living. People, divided into socail classes lived peacefully together. Those of Noble Blood where of the highest social class.
All seemed to marvel in the heights of enlightement until two brothers came to argue over the love of a Lady. In the heat of their conflict the power within them unchained in an unseen burst of magic, darkness and fire. A battle between the two caused a Rupture in the balance between the world, it’s magical boundaries and the darkness from the underworld. The Rupture annihilated both brothers and many other of Noble Blood. What was left was chaos and fire and desolation.
Nothing was the same afterwards. Civilization fractured and the people shied away from Noble Blood. After the Rupture scholars found that the power had layed within the blood. A rage whelled up amongst the people to hunt down all of Noble Blood. They all but succeeded. Some used the blood to perform feats of magic or to offer to their gods, believing salvation could be gained through the offering.