Selene and Helios reside in their planes; Luna and Sol. These two planes are essential to life on Xavia. But for an unknown reason, the combination of these two release a strange magical byproduct. During a lunar eclipse, (also known as the blood moon) beings caught in it’s light have a small chance of becoming afflicted with lycanthropy.
Lycanthropy is an uncurable magical disease, that gives one the ability to change into a hybrid of their race and an animal during a full moon. In most cases when one shape shifts during a full moon they lose control of themselves. If a lycanthrope bites another being, the subject has a chance of contracting lycanthropy. Given time and the right training a lycanthrope can learn to control this disease and shape shift at will. It is said that a higher form exists after the hybrid form called crinos. This form pushes one abilities to the fullest, though one cannot maintain it indefinitely like hybrid form. Only the most powerful of lycanthropes have the ability to use crinos.