X-Men #1 (9.0)

1st team appearance of the X-Men Gold (team): Storm, Archangel, Colossus, Iceman and Jean Grey

1st team appearance of the X-Men Blue (team): Cyclops, Wolverine, Gambit, Rogue, Psylocke and Beast

1st team appearance of The Acolytes: Fabian Cortez, Annie-Marie Cortez, Chrome, Nance Winters, Delgado

Magneto forms the Acolytes and proclaims Asteroid M a haven for mutants everywhere. But the rest of the world doesn't see it that way.