New Player BARD Question

[Berethos]

Ravana Ex? Probably related to the Moon and Spirit Ghana adds that appear. It's been a while since I did the fight, but I'm pretty sure the debuff will trigger them as aggrod the same way attacking them will which may lead to them casting their sword generating cast earlier than anticipated, and it's possible those telling you not to use it were doing so with that in mind.

I don't know if it's strictly necessary to avoid triggering them via Foe's these days though, what with higher gear levels and all, but that's really the thing that springs to mind.