(Player's Handbook v.3.5, p. 262)

Level: Druid 3, Warmage 3, Blighter 3, Death Master 3, Urban Druid 3, Cleric 4, Dread Necromancer 4, Slime 3, Abyss 4, Pestilence 4, Scalykind 4,
Components: V, S, DF,
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).