the question is, if you do fight all 3 bosses together do they still use their signature skills? Like the curse of death, curse of pain and health conversion. Cuz so far I've seen Levia use steal energy and Roseris use thorny embrace among the other skills like whip strike and whatnot.

Nvm turns out that they do, almost got wiped by a consecutive curse of pain followed by a health conversion on Mira who i had healed -(rip Mira) and then a curse of death on Elly.