67. Magneto vs. Apocalypse
The Age of Apocalypse was based on the idea of what would happen if a powerful mutant killed Professor X in the past before he could create the X-Men? The power display would waken Apocalypse, who would attack the world before it had the proper superhero defenders to stop Apocalypse, and Apocalypse would soon rule the world.
However, with Professor X dead, Magneto would have to be the one who started the X-Men, and in the Age of Apocalypse, we see that Magneto and Apocalypse have had quite a few battles over the year through Magneto’s X-Men and Apocalypse’s forces of evil.
Magneto had been captured by Apocalypse’s forces earlier on in the storyline, and in the final issue of the crossover, X-Men: Omega (by Scott Lobdell & Mark Waid with pencils by Roger Cruz), Magneto has been tortured and is in bad shape. Meanwhile, nukes are falling all over the place in an attempt to destroy Apocalypse. Magneto and the X-Men, however, need to get Bishop enough time so that he can travel back to the past to stop Xavier from having ever been killed. To do so, the X-Men break into Apocalypse’s headquarters to free Magneto.
They do so, but suffer heavy casualties.
The weakened Magneto takes on Apocalypse, and things are not going so well, but in one last heroic gesture, Magneto uses all of his power he can muster and TEARS APOCALYPSE IN TWO!
That dramatic scene gives them the opportunity for Bishop to make his move (with a few stowaways from the Age of Apocalypse universe) and Magneto can stand happy as the nukes fall knowing that he has saved the day.