I just got deleted by her twice in SR30 boss shard on a build that usually eats everything for breakfast and still 1 phases Grava:
I think it’s Bloodsworn Curse + the Crystals allowing her to shotgun like a tank. Kinda nice to see, but I think she may be a bit overtuned as is going to frustrate a lot of more causal SR players.
Isn’t it just that having more HP allows her to actually do her stuff? She has always been dangerous if she stayed for more than a few seconds, but generally she didn’t.
Zarria and father abbadoth need to be killed asap. their crystals were dangerous before too. Also Thallnosh (karroz second phase) has more HP than most nemesis 
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Aye, I always watched out around Abbadoth because he’s handed me my arse multiple times due to his obscene capability to crit. Zaria though? Cake walk, last got killed by her levelling in veteran years ago and learnt to kite and kill her crystals. But in SR she’s always been a lesser threat, able to be pulled into a ball of bosses for the slaughter.
Until now.
I get the feeling Zantai wants us to only 1v1 bosses in SR, but as we’ve all found when running it regularly, that’s not always a possibility…
you can still multi tank, mebe just don’t do 4 then but 2 
and if you think it’s the curse, overcap chaos and poison res? it’s regular minus RR so you can nullify that with extra res