Trim your list and zone in to units that are not affected morale-wise by undead. You could use a bunch of Neutrals, or even more undead. From Neutrals you have the 3 dragon types, then you just tank with BKs while they fly around doing massive damage. Same with Bone Dragons, great manueuverabilty, area poison damage, and like the BKs are easy to resurrect with Evlin. If you get S'Krassh shield and Jade Belt, then Undead Spiders could act as your DPS, while BKs act as tanks/DPS.
Or you could go with the team that I used for my impossible warrior high score run in KBAP: bone dragons, black knights, guard droids, repair droids (split into 2 stacks); a killer full 5 slots army, I'm sure you've heard about it since you made a comment regarding my post in the KBAP thread.
