Negative Energy Burst

(Tome and Blood: A Guidebook to Wizards and Sorcerers, DnD 3.0)

Necromancy

Level: ; Sorcerer/Wizard 3
Components: V, S
Casting Time: 1 action
Range: Close (25 ft. + 5 ft./2 levels)
Effect: 20-ft.-radius burst
Duration: Instantaneous
Saving Throw: Will half (see text)
Spell Resistance: Yes

You release a silent burst of negative energy from a point you indicate.
The burst deals 1d8 points of damage to living creatures in the area +1 point per caster level (maximum 1d8+10).
A successful Will save reduces damage by half.
Since undead are powered by negative energy, this spell cures them of a like amount of damage, rather than harming them.