Magneto Vol. 4: Last Days — Cullen Bunn

Earth is on a collision course with oblivion, and Magneto has just learned that time is running out. With everything he's fought for being brought to an end, how will the Master of Magnetism spend his last days on Earth? Will he celebrate his legacy? Be tortured by his past? Or take it upon himself to stop the end of all things? Desperate to prevent the mutant race from its inevitable extinction, Magneto faces down the gruesome Sugar Man. But has the key to salvation been right in front of him all along- in the form of his daughter, Polaris? With Earth on the verge of destruction, the Master of Magnetism is determined to be mutantkind's savior at long last, but what terrible price is he willing to pay? Collecting Magneto (2014) #18-21.