Ok, I thought again and realized how well Nagash's revive ability works with reinforced harbingers, lets try to do something halfway serious with that. Nagash and 4 harbingers leaves only 580 points to work with, 530 if you want the extra command point in the first battle round. You definitely want a blob of mortek for numbers, maybe a unit of deathriders to have something else quick that can move for objectives, or that can screen nagash on the move. That would leave 140 points left... Boneshaper for some healing? 10 more mortek to just sit an objective? If sitting an objective is the goal, then Teratic Cohort is probably the go to option thanks to their faster move and deep strike. So that looks like....
Nagash
- 4 Harbingers
- 20 Mortek Guard
- 5 Death Riders
- 8 Teratic Cohort
Formation: bring back half the mortek guard unit on a 5+
OBR spells, manifestations, and terrain
points total: 2000 on the nose
Single drop, which seems super rare this edition, you should pretty much always have the choice of who goes first on the first turn.
Tactics: throw Harbingers at the opponent as fast as possible, Mortek guard & Nagash claim the center, Teratic Cohort deep strike onto an open objective, Death riders either go for objectives or help screen Nagash if needed. When the harbingers die, Nagash brings all four back and sends them straight back into combat thanks to their 3d6 flying charge. If the Mortek guard die you get 5+ rolls for the rest of the game to bring 10 of them back, too.
Variant: dro pthe death riders and teratic cohort, add another block of 20 mortek guard. Fewer and slower units to go for objectives, and fewer wounds on the table, but more models, and with two big mortek blocks more likely to get one back from the formation. Maybe better? I'm not sure.
Either way, no other heroes, no artefacts, no diversionary tactics, no crawler, a hideous 540 points spent on a single unit after already spending 880 on nagash, but.... does this look half-way viable, or am I just fooling myself?