[Endoperez]

There are many hard-coded things that modders can't duplicate via mod commands. LA Ermor's autospawning is one of them, spells summoning creatures from a spesific list is another, etc etc.

It is possible to make a spell summon national, varying undead if you use -1 or -2 as the unit number, I think, but no way to define the units a nation can get from them. This means that modded nations only get default, human corpses as national undead.