[jutetrea]

But we already have something of the sort, certain nations getting special undead holy spells irregardless of their pretender choice. Shouldn't it be an undead god that gives the ability to cast sepulcher, etc

Honeybadger, are you asking for pretenders to get ranks in holy magic and the ability to cast holy spells?

or (and I'm assuming this is it)

There are already nation specific spells, why not pretender specific spells - with holy being the easiest implementation.

Similarly, nation + pretender specific spells. For instance, I'm playing EA TC I get chastisement (3S), if I choose the god of war pretender I'll get chastisement + god of war specific spells (ex. heroism +15hp).

If I'm playing LA Ermor I may get sepulchre, and if I choose god of war I get sepulchre and "heroism"

Holy seems to make the most sense, but it wouldn't have to be limited to that.