This story runs through issues #11-14 of Excalibur, from 2005, and is collected as Excalibur: House of M Prelude. It is a genuinely meaningful and constructive big-event story, though that is actually only issue #14. The previous three issues are a big action story involving a team of X-people who are opening an office of Warren Worthington's Mutantes san Frontieres organisation in Zanzibar, when a force of Weaponeers attack the city, led by Viper. The Weaponeers have their own agenda, one that doesn't require Viper to survive the mission. Callisto brings a team of mutants from Genosha to help, Viper and Scimitar have a falling out, only Scimitar falls furthest. In the background, the Hellfire Club is up to something, and Viper is there as their emissary. Further in the background, Magneto confesses to Charles Xavier that he has `rescued' the Scarlet Witch from the events of Avengers Disassembled, and needs Charles to help her. In the fourth issue of this story, Doctor Strange tries to help Charles reach the comatose Scarlet Witch's consciousness, encountering all sorts of defensive mechanisms along the way, including Dormammu!