No, it just reminds me of a spell I dislike - Convert, 9th level, converts the target permanently to the caster's deity (without immediate alignment change, but a gradual change - one step a week) on a failed save (and makes it more suspectible even on a successful save). There are some bonuses to saves (for extreme alignment differences and for divine casters), but the spell can also be "sneak cast" in a non-combat situation, resulting in a penalty to saves. Atonement only works if the target wants to atone, and the target of convert usually doesn't want to.