so that same game that I was really frustrated at one of the bosses in the other day
there's another boss whose only method of damaging you is through inflicting poison on you, and she does so every turn and as a counterattack whenever one of your party members damages her
except
at this point in the game it's not difficult to have every one of your party members 100% immune to poison via equipment
and you can freely change equipment during battle, if you forgot to before the battle