Quote Originally Posted by Albions_Angel View Post
Its CR15. Yeah, in every edition, CR breaks down at high level, but in theory, its supposed to use up a decent chunk of party resources for a party of 4 level 15s.
The theory is they should expend about 18%, that a party of level 15s should be able to easily handle 5.5 mummy lords one after the other, each a Medium battle, with two Short Rests.