The Kingdom of Skyy
In secret temples far from bustling cities and priestly hierarchies, orders of esoteric warriors train their initiates in ancient traditions now forgotten or forbidden by most religious organizations. The champions of these orders are avengers-deadly weapons sworn to their religions, imbued with divine power through secret rites of initiation. In battle, avengers swear to execute divine vengeance, entering a mental state that gives them unerring focus on a single enemy. As an avenger, you were trained in a monastery, iitiated through secret rites, and imbued with the power to smite your religion’s foes. The religious organizations might view you as a heretic or a hero, but you answer only to your religion and to the vows you swore upon your initiation as an avenger. Where will those vows lead you? One thing is certain: Doing the will of your religion is never easy and never free of peril.
Source: Player’s Handbook