Flashback: How Marvel's "House of M" Changed an Industry and a Universe; ComicBookResources.com, 8/29/15

Marc Buxton, ComicBookResources.com; Flashback: How Marvel's "House of M" Changed an Industry and a Universe:

""House of M" #1 centered on Scarlet Witch, a long time Avenger. In "Avengers Dissembled," Wanda Maximoff was responsible for the mass destruction that tore Earth's Mightiest Heroes apart. In "House of M," the Avengers and the X-Men gathered to discuss just what should be done about this dangerous mutant with the ability to alter reality on a whim. This situation presented Marvel with many firsts. It was the first in a long line of crossovers that would involve the clash between two groups of major heroes. "Civil War," "World War Hulk" and "Avengers vs. X-Men" would follow as Marvel found a new formula to grab fan attention -- have two factions of popular heroes find a fundamental, ethical difference and have said heroes battle it out in a massive event.

While "House of M" did not feature a battle royal between groups, Bendis infused the first issue with palpable tension as mutant and superhero argued over the fate of the Scarlet Witch. It was clear that if the sides threw down, it would be epic. Fan debates sprung up online arguing who was right. Should Wanda be destroyed or contained? And if she was contained, who should care for her -- mutant hero or human champion? This super heroic moral impasse would become a frequent trope used in event comics, but this particular war of ethics would not continue for long in "House of M." In the first issue, Magneto showed up to retrieve his daughter and the true drama began. "House of M" #1 was read, devoured and debated, but most of all, it was an instant smash with 233,000 copies sold. Those numbers indicated that the super hero crossover event was back in a big way."