There is an adventure available in the Downloads section of Wizards.com called Thicker Than Water.
The event-driven adventure, by Monte Cook, revolves around an air elemental creature looking to fulfill an ancient prophecy.
I've decided to incorporate this adventure into my Age of Worms campaign (now underway!!!) mostly as written, except as below... and maybe with some other changes if anyone has some suggestions.
I'm going to change it so that Migos Fehr has been purposefully (mis-) led to fulfill the prophesy by agents of the Ebon Triad, who believe that the Pressage of Forms is one of the steps to their crowning acheivement.
I plan on introducing the first part of the adventure when the party first goes to the Free City, then the other parts here and there spread out in between the adventures.
I've already selected the target PC, and I have given him a little insight to the Wind Duke glyphs, and during his sleep, he subconsiously understands the "whispering winds" which influence his dreams. Essentially, he's going to get auran as a "bonus" language, but won't realize for a couple of levels.
I find it particularly interesting that the adventure involves air elemental creatures and powerful undead. It seems to be able to fit quite well into Age of Worms.
That is a pretty good adventure. I like the way it can be spread out over several levels. I might steal your idea and integrate it into my AoW campaign too. Especially if the players need a little extra experience.