X-Men #11 (May 65): The Triumph of Magneto! Creative Team: x-traodinary script by Stan Lee; x-travagant art by Jack Kirby; x-ceptional inking by Chic Stone; x-emplory lettering by Artie Simek
Starting Line Up: Cyclops, Iceman, Angel, Beast, Marvel Girl
Synopsis: Both Xavier and Magneto become aware of a powerful source they assume is a mutant and race to recruit it first. Magneto wins (hence the triumph) but the being turns out to be a cosmic entity known as the Stranger, who has come to Earth to study mutants. After a fight, he takes Magneto and Toad back to his homeworld. He turns Mastermind into stone. The X-Men offer Quicksilver and Scarlet Witch a spot in the X-Men, but they decline.
Yeah, but is it good? Well, it's the end of the first chapter of the original X-Men with the disbanding of the original Brotherhood of Evil Mutants. But don't worry... they all return eventually. Magneto will remain a major villain for the X-Men. Toad pops up once in a while. Mastermind somehow gets better and goes on to be very important in the early Claremont era. And Quicksilver and Scarlet Witch go on to join the Avengers and become solid B-level heroes.
Significata: First appearance of the Stanger. The original Brotherhood of Evil Mutants disbands.