I'm cross-posting my scifibigbang story here, as I hope it may be of some slight interest to you all. :)

Title: Goodbye (To Yesterday)
Author name: penumbren
Artist name: perletwo
Beta name: niki_chidon
Media Link: deviantArt
Word Count: 25,915
Fandom: Marvel Comics (The Avengers)
Rating: PG-13
Characters: Tony Stark, Steve Rogers, Jan Van Dyne, Hank Pym, Thor, Red Skull, Loki
Genre: Adventure
Summary: On Earth-9810, Sorcerer Supreme Tony Stark investigates an alien energy disturbance, runs into a group of friendly superheroes, and discovers a living legend. Then the villains of the piece show up for revenge and try to take what they consider theirs.
Warnings: Slashy hints, some cursing, comic book violence, (very brief) references to rape and torture, and mentions of the off-screen death of a secondary character.
Author’s Notes: The Lesser Book of the Vishanti, compiled by catherine yronwode, was absolutely invaluable. It’s an amazing resource, and I’m very glad the author made it freely available online. Some of the spells in this story were taken from her compilation. A few were made up by me. The overall magic style is a blend of what I’ve seen in Marvel comics, White Wolf’s Mage system, and my own imagination.
Disclaimers: None of them belong to me, sadly. I only borrow Disney’s Marvel’s characters so that I can treat them better than their owners do.

Click the picture to see perletwo’s gorgeous cover art in full size.

Click the cover art to go to the fanmix.

Read it at AO3