WandaVision’s fifth episode premiered today and it featured a whirlwind of surprises. It left fans with more questions than answers, but it also proved that huge changes are coming to the Marvel Cinematic Universe. We’ve known the multiverse was coming between all of the rumored Spider-Man 3 cast members and the Doctor Strange sequel literally being called Doctor Strange in the Multiverse of Madness, but the latest episode of WandaVision just took the first huge step in creating a bigger multiverse for the MCU. Warning: WandaVision spoilers ahead! At the end of the latest episode, Wanda (Elizabeth Olsen) opens the front door, only to discover her formally dead brother, Pietro. However, instead of bringing back Avengers: Age of Ultron’s Aaron Taylor-Johnson, they brought in Evan Peters, who played Quicksilver in the X-Men franchise. Most of the X-Men films were made before Disney merged with Fox, which means fans never expected to see any kind of crossover. Now that this WandaVision moment exists, it’s safe to say we can finally end the debate on whether certain Marvel shows are MCU canon. If Peters can exist within the Marvel Cinematic Universe, so can Agents of SHIELD!