I just got it done with a cosmetic weapon at lvl 58, so you girls got this.
Inspect my profile if youre curious for weapon, gems, enchants etc. I used potion of unbridled fury (though I didn’t really need it in hindsight) and drums. Also shadowcore oil, spectral flask of power, and a mastery food buff.
The battle comes down to managing adds. A successful run is one where you kill adds the fastest. I used asphyxiate to stop one imp servant, and grip on another servant as they’re casting (which interrupts it). I ran to them as they appeared.
Never stop moving with fuming imps. They are not necessarily the priority, but they will ruin your runs if left unchecked. You need mobility, so the more that explode the worse it’ll be. If you covered the two areas she teleports between may as well restart. Don’t be afraid to use chains of ice on them to slow them down a bit while you claw of shadows from afar.
The unholy blight+dark transformation is incredibly deadly and makes the lots of imps phase trivial.
A very good way of doing it, though I had a separate button for it. Try to get your pet to the farthest imp and get everyone in between with dark transformation. Epidemic to cleave quicker. If you see fuming imps DO NOT STOP MOVING.
If imp servants spawn with lots of imps, that’s a good thing, because your unholy transformation + unholy blight combo will cleave them quicker. Continue using asphyxiate and grip to interrupt their heal spell.
Something that helped me immensely is my pod trinket (inspect profile for reference). I tried saving it for whenever her shield was up. It’ll break the shield quicker, while healing you. If it overwhelms you with adds, you have an extra cleave + shield breaker + healer. Incredibly useful to trivialize her shield phase.
It drops from the first boss in Emerald Nightmare. You have 4 tries to get the trinket, so don’t sleep on it.
*I never used virulent plague, because unholy blight dots mobs for me.
*I tried to maximize soul reaper use on small adds for rune regeneration. In fact, adds are your friends in this encounter because you did more dps when more of them were out.
*anti magic shell at the beginning of each small imp phase. I pressed, unholy blight, dark trans, and anti magic shell in order.
*On the platform, don’t be afraid to utilize the whole platform for movement
*BE MINDFUL OF BOULDERS