Its a cool idea i think for a fun lil studio or show off army
For the codex, i would mix some of the rules from Necrons(maybe, since the codex hasn't been updated in awhile),
and Tomb Kings (like da crumble rule with their morale), and a mix of vampire counts.
Thats my insight, and I'd like to see of picture of that army once your done or partway through with it
Automatically Appended Next Post: Another thing that might be difficult for the army is how it would fit in with the rest of W40k