Create greater undead

'Create greater undead was a necromancy spell that created more powerful undead than the lesser create undead'' spell.

Effect
This spell functioned in the same manner as create undead, except that it allowed the caster to create more powerful and intelligent sorts of undead. The type of undead created was based on how powerful the caster is. In order of magnitude, these types were: mummies, spectres, vampires, and ghosts.