Magma barrier in darkshrine lab rooms, too strong and sneaky

Died inattentively in uber lab 100%->0 hcssf to a single magma barrier rare spider which I had <1 second to see and react to...



Uber lab, character was a bit weak at 5678hp, 114 shield, 169 ward, 79% fire res, ~25% spell block from tempest shield.

Seems a bit unfair but oh well. I assume some other archnemesis mods can do it too, though magma barrier is very inconspicuous, unlike toxic it doesn't even need you to kill them first, they can stack balls out of sight and just kill you like this. Izaro himself is less dangerous.