Earth'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 world? Collecting: Avengers vs. X-Men [tel]; Point One [tel]AVX story); AVX: Vs. [tel]; Avengers vs. X-Men: Infinite [tel], 6, 10; Avengers Academy [tel]; Secret Avengers [tel]; Avengers [tel]; New Avengers [tel]; X-Men Legacy [tel]; Wolverine & the X-Men [tel], 18; AVX: Consequences [tel]; Uncanny X-Men [tel]; A-Babies vs. X-Babies [tel]