This addon brings back the old scrapped ruby with a twist. The ruby seems to have some sort of fire-like abilities. It may function differently than what you may initially expect.
Select version for changelog:
Changelog
-bug fixes
-bosses have more health but deal much less damage
-new rubeic knight transformation
-rubeic shields have a new function
-some boss design alterations
-devil's mouth got a complete model change
(I'm just saying ok)