I have never gone for blood magic because someone said devils reduce your dominion. How does this exactly work? How much of a reduction are we talking about?
One of the demon lords does, but he is the only one, and he reduces all dominions in the province, not just yours, so it's useful to supress enemy dominions as well.
I don't want to start an offtopic religion thread, but I'll venture to comment with the generalization that religious people seem to have more trouble separating fiction from reality than most folks.
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