Onslaught Saga Part 2

Onslaught has been revealed in all his terrible glory! Betrayed by their own leader, the X-Men have been shattered from within, but there is more treachery to come. As the mutants discover the shocking secret of the Xavier protocols, the Dark Beast clashes with X-Factor and Onslaught attacks New York with an army of deadly mutant-hunting Sentinels! Mutant or not, all the world's heroes are being drawn into a battle that will decide the future of the Marvel Universe!