The most useful monster.

I won't argue with you. But it's hard to imagine how a Minotaur could defeat a single Black Dragon, let alone hundreds of them. Perhaps the same system will work against the Dragon King?

In online battles, as you correctly pointed out, this tactic won't work, but in offline battles, pay attention to saving and reloading after each successful block. And try to achieve the next successful block in the same way. As for the Dragon King, I don't know much – I haven't fought him much. Each battle needs to be tested experimentally.