Strategy vs (black) dragons?

[Tuplis]

This never really became a problem for me because I was able to max out onslaught around the time I started fighting black dragons (played paladin). If you can't do that, try to at least find one type of monster that has higher init that the dragons so you can start the fight by casting the spell that raises the init of all your units by 3. If all else fails, you can sometimes move your troops out of the dragons' range using the tactics skill.