Collects X-Terminators #1-4, Uncanny X-Men (1981) #239-243, X-Factor
(1986) #35-39 and New Mutants (1983) #71-73. The biggest and best
adventures of Marvel's mighty mutants - these are the X-Men Milestones!
Strike the match...fan the flames...and light the Inferno! Limbo's demon
lords corrupt two of the X-Men's nearest and dearest - Colossus' sister,
Illyana Rasputin, and Cyclops' wife Madelyne Pryor - and use them to
bring a horde of demons raining down on New York City! But as Illyana
battles to regain her soul, Madelyne threatens to cast a spell that will
merge Earth and limbo permanently - with the sacrifice being her own
innocent son! And when Mister Sinister brings his own agenda into the
mix, secrets are revealed that rock Cyclops to the core! The X-Men,
X-Factor and New Mutants face their most harrowing ordeal ever - with
the fate of the world in the balance!