Poison

(Player's Handbook v.3.5, page 262, DnD 3.5)

Necromancy

Level: ; Cleric 4; Druid 3; Warmage 3; Blighter 3; Death Master 3; Urban Druid 3; Dread Necromancer 4; , Abyss 4, ; , Pestilence 4, ; , Scalykind 4, ; , Slime 3
Components: V, S
Casting Time: 1 standard action
Range: Touch
Target: Living creature touched
Duration: Instantaneous; see text
Saving Throw: Fortitude negates; see text
Spell Resistance: Yes

Calling upon the venomous powers of natural predators, you infect the subject with a horrible poison by making a successful melee touch attack. The poison deals 1d10 points of temporary Constitution damage immediately and another 1d10 points of temporary Constitution damage 1 minute later. Each instance of damage can be negated by a Fortitude save (DC 10 + 1/2 your caster level + your Wis modifier).