Normal (Veteran) level, running an L34 Nightblade w/maxed resistances (expect for Aether). I can without fail (until today) facetank her, excepting only the rocks on phase #2. Instead, I got one-shotted - twice.
I checked her attacks - all acid/poison - so 80% res should have made at least some difference.
Only boss hp scaling got buffed.
That attack you’re referring to does physical damage not acid/poison. Check your armor/armor absorption.
Pro tip: that skill is similar to devastation, meaning once you see the rocks start to fall they wont follow you. The second you see them spawn, disengage and draw Ravna away from them.
I think you’re referring to the rocks in phase #2. My issue is with the green slime-balls when she first attacks that leave poison pools as well as initial impact damage.