Nature's Ravages, Greater

Necromancy
Level: Cleric */Oracle * 8, Warlock * 7
Components: V, S, M/DF (dried maggots)
Casting Time: 10 minutes/HD of target
Range: close (25 ft. + 5 ft./2 levels)
Target: corpse of creature whose total number of HD does not exceed your caster level
Duration: instantaneous
Saving Throw: None
Spell Resistance: no

This spell functions like nature's ravages, except the target corpse ages a number of years equal to up to 1 year per Caster Level (maximum 20 years at 20th level).