How to kill Black Dragons?

Uh... was the hero a master tactician covered in artifacts that give bonuses to troops?... + the Ring of Great Negation?... then in principle, it's probably possible.
Otherwise, the best option is to find the aforementioned ring and cast some nasty spell on the dragons...

But if you have that ring, then there's nothing to invent - you can easily defeat Chaos Dragons.
And by the way, I recently experimented with this very ring and Chaos Dragons in my army
while playing... it's something:smile08: With it, you can buff your own Chaos Dragons so much that they become... :smile14: something incredible. Even just one Blessing is enough - Chaos Dragons have a damage range of 55-110. And if there's a Chaos Sorcerer in the army, then Cat Reflexes and that's it:eek:

Added after 28 minutes

15 Paladins = Combat 5500 + health (healing). With such a Paladin, you can easily defeat Chaos Dragons.

But a Monk without Combat won't kill even three dragons, I'm sorry.

And I'm saying that I defeated 8 dragons with a Monk without Combat - but it seems like she had regeneration - there's some kind of ring like that... So, I generally pump up Combat last - although, no doubt, it's a useful thing - but I just have remnants from 3 heroes that the hero is a battlefield commander, not a super-killing machine, so I don't really play with Combat