I don't understand where this massive loss of my will in darks idea is coming from. Are you spamming dark passenger or something? The only time I have mp issues is when the boss jumps alot and becomes un targetable. Which really just drop darks idea if it's gonna be awhile the put it back when they land. This is of course from a level 52 perspective but still all this talk of dropping grit for blood sword do to lack of mp is kinda absurd