I love any kind of rule or new class that involves necromancy. Don't know why, but it just fascinates me. I personally prefer animation over debuffs, but this does it in just the right way that I love it. The first thing that caught my eye was the picture (Now my desktop :P) The second thing that really got me was the studies. Gives some new bite to reason to those low level spells and new bark to the higher ones.
What I would like to see are more spells listed under the studies, but still balanced. Maybe if it was stretched over 10 levels, it would be easier to balance, I don't know. It's your call.
All in all, I like this and hope to use it at one point, either as a PC or as an NPC my players face.
Keep up the good work.