AVENGERS VS X-MEN OMNIBUS HC CHEUNG IRON MAN VS MAGNETOEarth's Mightiest Heroes battle the Children of the Atom in a crossover so huge it calls for Marvel's biggest ever Omnibus! Get the whole story of the Phoenix Force's return to Earth, an event that kicks off an all out war between the Avengers and the X Men! The X Men see the Phoenix as mutantkind's salvation, and the Avengers consider it a deadly danger. But what happens when five of the X Men are transformed by the Phoenix and begin to change the