Yeeahhhh ... okay  

Blood magic would fall under #2 Spellcraft I would think.
Necromancy ... #9 Summoning.

Those would be the two to specialize in.  LOL, Wiccans have a saying; never summon anything bigger than you can fit in your hand.  (I think that's how it went.  Moral of the saying.  Summoning is easy.  Control is another matter.)  That said, Mind Bending is one worth considering.