Avengers: Infinity War may be gearing up to fix Marvel’s X-Men continuity problem

Warning: major spoilers for Avengers: Age of Ultron and the comics crossover event House of M ahead.
In 2015’s Avengers: Age of Ultron, Marvel Studios introduced the speedster hero Quicksilver — and then promptly killed him off. There are a lot of potential reasons for Pietro Maximoff to die in the film series, rather than joining the Avengers with his sister Wanda, aka the Scarlet Witch. Marvel Studios may have wanted to avoid confusion with the version of Quicksilver appearing in