Avengers / X-Men: Bloodties

In 1995, Marvel united two of its mightiest teams for a single-issue crossover event, Avengers / X-Men: Bloodties, written by Bob Harras and illustrated by Steve Epting. The story pits the combined forces of Earth's Mightiest Heroes and the Children of the Atom against the threat of the mutant terrorist Magneto, who has seized control of the island nation of Genosha. This tense, action-packed one-shot stands as a key moment in the mid-90s Marvel Universe, highlighting the growing divide between mutantkind and humanity while showcasing the uneasy alliance between Avengers and X-Men.