Is Magneto the Secret Villain of Avengers: Doomsday?

The original X-Men are back for their big MCU debut in Avengers Doomsday, but why? Well we think Magneto will be one of Doctor Doom's greatest rivals in this climactic multiversal showdown between these two Marvel universes. And this is all leading to Avengers Secret Wars and connecting 25 years worth of X-Men, Deadpool, Spider-Man, and Avengers stories that Kevin Feige has been cooking since that very first X-Men film.