Poison

Player's Handbook v.3.5 (PH)Core (3.5)
School
Necromancy
Casting Time
1 standard action
Components
V, S, DF
Range
Touch
Target
One living creature
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).