Author, why not [Raise Skeleton] or [Create Skeleton] instead of [Raise Undead]? [Raise Undead] is more along the lines of turning dead bodies into undead. The power of the undead would depend on how powerful the bodies used are. [Create Skeleton] would be using your mana to create skeletons. Or grabbing a bunch of bones and using magic to combine them into a skeleton.
Darian