Energy Drain

At 3rd level, and every two levels thereafter, a sorcerer learns an additional spell, derived from her bloodline. These spells are in addition to the number of spells given at new levels. Energy Drain: You point your finger and fire a black ray of negative energy that suppresses the life force of any living creature it strikes. You must make a ranged touch attack to hit. If you hit, the subject gains 1d4 temporary negative levels. Negative levels stack. Twenty-four hours after gaining them, the subject must make a Fortitude saving throw (DC = energy drain spell's save DC) for each negative level. If the save succeeds, that negative level is removed. If it fails, that negative level becomes permanent. An undead creature struck by the ray gains 10d4 temporary hit points for 1 hour.

Energy Drain — Kingmaker