The House of M. An alternate reality created entirely by the Scarlet Witch based off her brothers, Quicksilver, desires. Mutants are the status quo and humans are vastly out numbered. Iron Man is human in a robot suit who fights other robots, such as the Human Torch, for sport. Magneto and his family rule as the most powerful government on the planet. And Wolverine is the head of S.H.I.E.L.D.. Because of his healing factor, Wolverine is the only one who realizes the entire world has gone topsy turvy and sets out on a quest to set the world straight. During his quest he encounters a mutant who can set other people's minds back right and the crusade against Magneto, The Scarlet Witch and Quicksilver begins. The heroes prevail, as they always do, but not without Scarlet Witch absolutely abolishing most of the mutants in the world by uttering the phrase "No more mutants...", taking the mutant population from tens of thousands down to just a scant 200. Outside of Civil War, this is by far one of my favorite cross overs. I highly recommend getting your hands on it if you can.