so... how the hell do u beat captain madison in satasha hard?

[Granyala]

The huge damage move also does not kill the person it hits (at least it didn't in any attempt we tried) if they have decent remaining HP.

Correct it cannot. It drops them to 1%.
As such it is not necessary to heal people back up to 100%.

Just let them hover at 30-50% (except tank ofc) but dispel the poison immediately. There is enough time to dispel all three, so identifying the target isn't even necessary.

This boss if freeloot whether he gets stunned or not.

That's why they shouldn't have listened to people who cried for harder dungeons.

Sastasha is piss easy once you understand the mechanics.