The Uncanny X-Men adventures with the Marvel Mutant Massacre begins with the trial of Magneto! Rachel Summers becomes Phoenix and the Brotherhood becomes Freedom Force! Lady Deathstrike becomes a cyborg, Moonstar a Valkyrie, Colossus a killer, and Psylocke an X-Man! And Sabretooth first set his clawed foot into the X-Universe alongside his fellow Marauders! Guest-starring the original X-Factor, Power Pack and Thor! Gods, Morlocks, talking frogs and more!
CollectsPower Pack #27The New Mutants #46The New Mutants Special Edition #1The Uncanny X-Men Annual 09The Uncanny X-Men # 199-213Thor # 373-374X-Factor # 9-11
— Description from Comic Vine community (comicvine.gamespot.com).
