Rebuke, Final

(Spell Compendium, page 170, DnD 3.5)

Enchantment (Compulsion) [Mind-Affecting], [Fear]

Level: ; Sorcerer/Wizard 7
Components: V, S
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One living creature
Duration: 1 round/level
Saving Throw: Will partial
Spell Resistance: Yes

You jab the stick into your side and twist it, causing yourself some discomfort but creating a killing pain in the target.

This spell functions like rebuke, except that the target dies instantly if it fails its saving throw. A creature that survives this effect is dazed for 1 round.