Cambercym

well officially I have to say it's bad. but that's officially.

Shit, I dunno how its possible to have so much written "between the lines" in a one-line reply, but there it is

All both of them 😁

What do you do with the other 13 minutes?

Four Elements monk is in the PHB. Oathbreaker is in the DMG only and is intended as an option for story villains (or movie star guest characters).

I'm reticent to suggest various wikis on the net because generally they get bloated with a vast array of unofficial and terrible homebrew options (hello dandwiki). Had a quick Google, Subclassguide.com looks like it sticks to listing exactly what is in each official book without overstepping the lines of copywrite