Undeath to Death

• Caster Level(s): Wizard / Sorcerer 6, Cleric 6
• Innate Level: 6
• School: Necromancy
• Descriptor(s): Negative
• Component(s): Verbal, Somatic, Material
• Range: Medium
• Area of Effect / Target: Colossal
• Duration: Instantaneous
• Additional Counter Spells:
• Save: Will negates
• Spell Resistance: Yes
• Material Component: Dust of Diamond
  
  This spell slays 1d4 HD worth of undead creatures per caster level (maximum 20d4). Creatures with the fewest HD are affected first; among creatures with equal HD, those closest to the point of origin of the burst are affected first.