A tower. A mission. A gathering of armies. Swords will be drawn in the first epic crossover of the astonishing Dawn of X! Wolverine, the X-Men, Cable, X-Force, Excalibur, X-Factor, the New Mutants, the Marauders, the Hellions and the rest of Krakoa’s residents will all feel the effects — but which ten mutants will wield the blades?