Mass lock won't really work, because my intellect skill isn't powerful enough, that effectively means that even if I cast this spell all enemy creatures start attacking me immediately, and it gets very complicated, because e.g. 450 spearmen easily kill two black dragons with a single hit
The rest of your explanation has to be tested thoroughly and I'm afraid I will spend days trying to pass this boss
Anyway, what's the best army I should attack this bastard with?
Also bear in mind that I have a few Ancient Spells, I spent them only once before when killing a mechanical creature in Montero underground. But then again I don't want to waste them wholesale since there are other bosses ahead.