Can mortals learn Blood magic?
Anyone can learn Blood magic, if they can meet the requirements: • The caster has to draw the power from (or through) his own blood. This prevents most mortals from using Blood magic as they have no inborn capability to do so. (This is not the same as using blood as a component in ritual magic.) • The caster also needs a way of quickly replenishing his blood, if spilt or consumed. (Blood loss kills most mortal casters of blood magic.) So as a rule, morals rarely practice true blood magic. Revenants being the exception. They have an inborn ability whioch allows them to tap the power of blood, and have the power to quickly regenerate their unique blood. At least two Ghoul families have Thaumaturgy listed as a Family Discipline. (Blood Magic: Secert of Thaumaturgy pg.139,140).
