This subclass was inspired by trying to take the european style of monk and turn it into a monk subclass.
Monks of the Way of the Vow are holy warriors that use their connection to the divine to help the helpless and diliver gods judgement to evil.
Mechanically you gain a feature similar to the paladins lay on hands but you drain the health form other creatures. You also gain the ability to do radiant damage on your unarmed strikes. At later levels you can recieve divine guidance and remain in the fight after you should have fallen.