Unleash your dark side...
The Slayer derives his power from the demon Kazan, who possesses his arm. Only his thick, mystical chains keep the dark parasite at bay. As a consequence, a Slayer can only wield a weapon in one hand, a disability he has fashioned into a distinct advantage, doing with one arm what most other swordsmen would need two to do. He primarily attacks his enemies with swords and blunt weapons, but can also call upon the dark power within him to cast magic spells. This dark power gives the Slayer a particularly high resistance to Shadow attacks, but unusually low resistance to Light attacks.