I
love "Inferno." Well, the X-Men/X-Factor side of the story, to say. The crossover by Chris Claremont, Marc Silvestri, Louise Simonson and Walt Simonson that rewrote the history of Jean Grey and Madelyne Pryor is the most well-executed retcon of all time with a breathtaking climax. Now, there was a third part involving the New Mutants that I never read, but it was the payoff to the years-long story of Illyana Rasputin - Colossus' sister - who had been abducted by Belasco - the ruler of Limbo - to become his successor.
