Fandom PSLs

Anybody interested in a crossover psl? Bonus points if it's Percy Jackson. I have this random notion in my head about a Percy/Chris line. But I'd be good with Supernatural, The Vampire Diaries, or something else, too.

Long shot, but anyone out there with a Caleb Danvers muse from The Covenant?

I'm also really in the mood for something fantasy/era set. Maybe something from Merlin (canon/AU or original with similar setting) or Legend of the Seeker? (I'm less knowledgeable with Legend of the Seeker, so flexibility or original with similar setting would be needed.)