De-Aged to Avert the Apocalypse

Okay, last one; promise.

What's the one where Dean gets De-Aged (to avoid going to hell) and has to grow back up; then Sam does it (on purpose) at the edge of a huge chasm/pit to avert the apocalypse. The spell/ritual involved a necklace (maybe the amulet). They lived in a house close to Bobby's.

[identity profile] kaelysta.livejournal.com 2012-12-14 12:54 pm (UTC)(link)
Pretty sure Authoressnebula's http://www.fanfiction.net/s/4164320/1/Small-Clause-Out is the one you're looking for. It's one of my favorite de-aging fics. :)