Undead only?

[Sandsai]

Originally Posted by Psychward

I've been trying this out the last few days... , the Black Knights don't have any special skills (Circle Attack, or even Running would be nice...

Evidently you haven't even tried the Black Knights because they in fact do have the ability Running. Not to mention their armorer ability and physical resistance along with their ability to get a bonus to damage and chance to crit up to a max bonus of +15 to damage and +15% to crit when hit. Furthermore, if you have undead they give +1 morale bonus to all undead units. All in all, the best tanking unit out there. And they are undead meaning you don't have to worry about the annoying Hypnotize spell being used against you or doom. So, I would have to disagree with your assessment of the Black Knight.