House Of M by Brian Michael Bendis

A grief-stricken reality-warping mutant reshapes the world into one where her family rules and mutants are the favored majority, granting many heroes their deepest wishes. One hero retains his memories and rallies a resistance to restore the truth, leading to a devastating confrontation. In the aftermath, the mutant utters a fateful decree that strips powers from most of her kind, dramatically altering the balance of power across the world.

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