The Oath of the Watchers is one of the paladin's newest and most distinctive subclasses in Dungeons & Dragons Fifth Edition. Rather than exemplifying a holy ideal or siding with the forces of cosmic good, the Oath of the Watchers protects the mundane world against all extraplanar threats, including celestials.
Source：https://www.cbr.com/dnd-5e-oath-of-the-watchers-paladin-build-guide/
