Withering Palm

School: Necromancy [death, evil]; Level: cleric / oracle 7, witch 7

Casting Time: 1 standard action

Components: V,S

Range: Touch

Target: Living creature touched

Duration: Instantaneous

Saving Throw: Fortitude partial; Spell Resistance: Yes

Source: ECB, pg. 117

With a successful melee touch attack, you deal 1 point of Strength damage and 1 point of Constitution damage per two caster levels each (to a maximum of 10 points of Strength and Constitution damage), with a successful Fortitude save only doing half the ability score damage, rounded down. If you manage to confirm a critical hit on that melee touch attack, the ability damage is instead ability drain (with a successful Fortitude save downgrading back to ability damage, but the amount is still the same).