Lovecrafting Atlantis.

[HoneyBadger]

Does the spell work if you have an undead leader already in the province?

I think right now we're limited to 1 type of unit at a time. The best work-around that I've found, in terms of what we can actually do with the mod commands as they presently exist-is to have one creature which spawns another type of creature, which in turn spawns a third type, and so on ad infinium. The problem with this ofcourse is exponentiality.

[Poopsi]

with undead commanders it should work, but the idea was to make it on the lines of Pale Riders.

Making it a unit that, like the balrog, starts with some units in the battlefield, could work (assuming this is doable). Say, make it spawn four mannead-like units, with undead command, which start with some mandragora-like creatures as spawn...