So, like, 10-20 Gorgons guarantee the "Breath of Death" spell? Nonsense. Even if it works, it will kill 1-2 creatures, and who knows what the probability of that is. In any case, I don't know.
I'm going to study the game mechanics, I admit my mistake, although it's understandable since I didn't play the earlier versions much, and with the release of the 5th installment, I stopped using the classic strategies altogether.