This.

Alternatively, you can wipe him out fairly easily with a couple high-ish level cavalry (5's are a treat) with a decent weapon and the charge trait. In that instance, it's basically an initiative roll. He pretty much is wearing nothing but underwear (no armor to speak of) and has the hitpoints of a carrot. But again, unless you've got lots of init, don't even mess with him.

What I generally do is to go with an army with a mage champ. I equip the mage with daggers and the such as to have good init and just keep countering his despair. Of course, if the dark wizard resists the counterspell... You're dead.

However, I sometimes use a bug (when I don't feel like reloading lol) where if you click auto-resolve (after failing the counterspell, for instance), you win without any loses... Seems that because the attack of the dark wizard is not so terribly good.

Fuck Dark Wizards.

and from my exp  they always do. feedback on the other hand works all the time for me.

but impulsive mages or archers are a great idea. never thought of that...