AXIS
2014A Red Skull empowered by Professor Xavier's stolen brain unleashes a wave of psychic hatred across the world, and the Avengers and X-Men must unite to stop him. When a desperate spell inverts the moral alignments of everyone present, heroes become villains and villains become heroes. The inversion creates chaos across the Marvel Universe and has lasting consequences — most notably a permanently "inverted" Havok and Sabretooth.
9 core issues, 0 optional tie-ins/crossovers
Red Onslaught — the Red Skull wielding Xavier's brain — attacks; heroes and villains unite
The inversion spell is cast; heroes and villains swap moral alignments
Inverted heroes wreak havoc; the inverted X-Men attempt mutant supremacy
The inversion is mostly reversed; some characters remain permanently changed