Hey, everyone. I'm looking for a specific fic set sometime after 5x19 where Gabriel's shade approaches Dean with a proposition: he wants Dean to take his place as a trickster god.

(More spoilers:)

Dean is looking for a change, so he takes Gabriel up on his offer. Gabriel's shade/ghost/something-or-other (I can't remember exactly) has a set amount of time to train Dean to be a trickster, but as soon as Dean officially takes on the mantle, Gabriel will no longer exist. It's a Dean/Gabriel story.

I can share more spoilery details about the fic if this isn't enough.