The Uncanny X-Men
The X-Men battle Mr. Sinister on the psychic plane while Maddie's mind merges with Jean Grey's. They hunt Sinister and the Marauders to Xavier's School, where Sinister teleports Polaris and Malice away and knocks most of the team unconscious.
Final battle with Mr. Sinister; X-Men destroy his base beneath the orphanage
Collects X-Factor #27-50, X-Terminators #1-4, and crossover issues. Includes Inferno and the original X-Factor's climactic battles with Apocalypse.
Collects X-Factor #37-40, The Uncanny X-Men #241-243, Excalibur #6-7, The New Mutants #73, X-Factor Annual #4. The Inferno crossover conclusion — demons invade New York across all X-books.
Collects X-Terminators #1-4 and material from 3 other series. The Inferno crossover - Madelyne Pryor becomes the Goblin Queen, demons invade.
Collects X-Factor #33-40, Uncanny X-Men #239-243, New Mutants #71-73, and Excalibur #6-7. The Inferno crossover -- Madelyne Pryor becomes the Goblin Queen as demons invade New York.
Collects X-Factor #33-40, Uncanny X-Men #239-243, New Mutants #71-73, X-Terminators #1-4, and more. The full Inferno crossover -- demons overtake Manhattan.
Collects The Uncanny X-Men #239-243; X-Factor #36-39; The New Mutants #71-73.
Collects X-Factor #37-50, The Uncanny X-Men #242-243, X-Factor Annual #4. The original X-Factor team -- the five founding X-Men reunite to battle Apocalypse and the Right.