Touch a creature that has not been dead for longer than 1 hour. You perform a ritual to absorb the creature's soul to fuel your magic, preventing it from crossing into the afterlife. After performing the ritual, you regain a spell slot of a 2nd level. This spell does not work on creatures without a soul. Using this spell always counts as an evil act.
At Higher Levels
When you cast this spell using a spell slot 2nd level or higher, the regained spell slot level is always one level higher than the spell slot expended to cast this spell up to the 9th level.