What would be the nastiest possible herald packs? A dozen t5 dolls in Swampy Pits? A ton of Harold souls in WSK?

If you are es warlock: Bone archers.

Bone archers are a pain yeah.
Conc vipers with fanat and curse is scary af too.

A pack of dark achers in act1 pit almost sniped my ass

They were literally in the cut shooting and almost one shotted my 5.1k life nado druid

Scariest pack is binding demon 1 of them by accident

Spectral hit witches is pretty busted in act5

Got amp , conc , critical … add in some extra/fast or another might/fanta pack

Thé act5 slingers that pierce gets pretty spicy! Also the act5 red portal archers.

all the things that were scary pre herald
dolls and souls dont touch the warlock even on negative res for some reason tho

On sc though? Nothing

Souls and dolls are scary but can be mitigated pretty well. There are some super fast super jacked melee guys that hit like trucks, one shotting me w 2nd acct BO on p8.