Necromancy is raising the dead and stuff, not shape shifting. Also wtf was your first post about?
Necromancy is the ability to obviously raise the dead.
Shapeshifting is clearly the form of shifting your shape. That Oblivion quest described a SHAPESHIFTER. Everybody has different definitions, though.
On topic: Good idea.
Also that oblivion quest most certainly did NOT describe a shape shifter. He was turning himself into an undead being with his hax hourglass thang.
EDIT: Also, how is turning yourself into a skeleton shapeshifting? x-x