I'm having a surprisingly hard time finding any team fics where the Avengers and the Winchester brothers/Team Free Will work together on a case. Most fics seem to focus on one or two characters from each fandom (predominantly Dean-centric), leaving the rest out completely. Either that or its some massive Superwhovengerlockwoodgods crossover. Are there any plot-driven crossovers out there that feature Sam and Dean (with or without Castiel, depending on the timeline) working with the Avengers? Any recs would be awesome, thanks.

(Is there a tag for Avengers crossovers, mods? I thought there would be, but I can't seem to find it.)