A couple of noob questions

[OmikronWarrior]

Blood Magic is good, yes. For nations with cheap 1 or 2 blood magic mages for hunting, its possible to start generate 100+ slaves per turn. Plus, blood magic has a lot of really great summons and ritual spells. However, if your nation doesn't have recruitable blood mages, it isn't easy to set up blood slave "factories" at that level.

Click on the stickied "strategy thread" in the forum and read the Mictlan blood hunting guide for some mechanics on blood magic.

P.S. Rule of thumb about dominions, the more diversity in your magic the better off you are. Any mage with 2 in a patch can cast the site searching spell (or 1 in the case of death and astral magic).