Avengers vs. X-Men

Published from 2012 to 2013, 'Avengers vs. X-Men' was a major crossover event by Marvel Comics. The storyline was crafted by a team of writers including Brian Michael Bendis, Jason Aaron, Ed Brubaker, Jonathan Hickman, and Matt Fraction, with art primarily by John Romita Jr., Olivier Coipel, and Adam Kubert. The event spanned 12 main issues and numerous tie-ins across various Marvel titles. The plot centers around the return of the Phoenix Force, a powerful cosmic entity, and its potential new host, Hope Summers. The Avengers, led by Captain America, believe the Phoenix Force poses a significant threat to Earth, while the X-Men, led by Cyclops, see it as a chance for mutantkind's salvation. The conflict escalates into a full-scale war between the two teams. Key characters include Iron Man, Thor, Wolverine, and Emma Frost, among others. Major events include the transformation of several X-Men into the Phoenix Five, the death of Charles Xavier, and significant shifts in the status quo for both teams. The storyline had a lasting impact on the Marvel Universe, leading to the 'Marvel NOW!' initiative, which relaunched several titles. 'Avengers vs. X-Men' was both commercially successful and critically divisive, praised for its ambitious scope but critiqued for its execution. It is considered a pivotal event in Marvel's modern era.