How do you fit black knights into a full army?

[john_crapper]

Posts about ways to utilize black knights are large and extensive. However They all seem to be directed at solo-ing with them. Solo-ing is kinda boring to me, as the appeal of the game is found in its variety of units and ways to synchronize their abilities and strengths.

However I cannot find a way to successfully integrate black knights into a full army. Too many races' morale goes down the drain. And at 35 level warrior, the attack/defense/crit penalty is really notice-able.

Cannoneers go from 63 A 32 D and 51% crit to 57/27, 38%

And thats just for 1 unit of morale. Orcs lose 2 and most other races lose at least 1.
Got the shard, got the eviln spell, all ready to go, but i cant find anything that goes well with black knights. Except dragons, but those arent easy to find in large quantities and on Impossible the verona dragon lair is guarded by 25 blacks, 35 reds and 40 greens, which given their immunity to "target" spell, makes them a costly battle.

Also the maybe more obvious answer to go full undead isnt applicable, because im playing for a high-score and running back and forth to replenish them isnt appealing to me.

So, any suggestions?