More a question of whether things that are suggested are possible. I would also expect someone with the ability to perform Necromancy would be able to raise his own dead.....
I can see a Necromancer as an aide, rather than as a trait. I would also want to be able to confer some particular recruitment of mercenaries... but agian., if this is not possible, there needs to be some tactical or strategic element to the trait.
Someone needs to test some of the ideas and see if they can be done.
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