Create Greater Undead

Caster Level(s): Cleric 8
Innate Level: 8
School: Necromancy
Descriptor(s): Evil
Component(s): Verbal, Somatic, Material
Range: Short
Area of Effect / Target: Point
Duration: 1 Turn / Level
Additional Counter Spells: Sunbeam
Save: None
Spell Resistance: None
Material Component: Black Onyx

The caster brings a powerful undead creature into being. The type of undead is based upon the caster's level:
Under level 15: Vampire
Level 16-17: Doom knight
Level 18-19: Lich
Level 20: Greater mummy