Featuring stories by an all-star lineup of creators including writers Kieron Gillen and Gerry Duggan and artist Dustin Weaver, FREE COMIC BOOK DAY: AVENGERS/X-MEN #1 will lay the groundwork for an event that will erupt across the Marvel Universe in 2022 and drastically alter the relationship between Earth's Mightiest Heroes and mutantkind. Rating: Teen (or Teen+)