| Issue | #350 |
| Published | December 1997 |
| Cover Price | 3.99 |
| Pages | 54 |
| Editing | Jason Liebig (Assistant); Mark Powers (Associate); Bob Harras (Chief) |
| Notes | Wraparound prismatic cover; Double-Sized; Gatefold Marvel Universe Guide cover; Non-enhanced cover exists. |
| Characters | X-Men (Gambit, Joseph, Archangel, Psylocke, Beast, Rogue); Maggott; Marauders (Scalphunter, Sabretooth, Harpoon, Vertigo, Riptide) |
| Genre | superhero |
| Pencils | Joe Madureira |
| Inks | Tim Townsend |
| Notes | Wraparound prismatic cover; Double-Sized; Gatefold Marvel Universe Guide cover; Non-enhanced cover exists. |
| Genre | superhero |
| Pencils | Various |
| Inks | Various |
| Letters | Typeset |
| Notes | Profiles for the characters in the story and synopsis |
| Characters | X-Men [Professor X; Gambit; Beast; Rogue; Joseph; Archangel; Psylocke; Cannonball; Cyclops; Jean Grey; Iceman; Colossus; Nightcrawler; Banshee; Wolverine; Storm; Nightcrawler); Spat; Grovel; Maggott; Trish Tilby; Magneto (disguised as Erik The Red); Mr. Sinister; Ferris; Marauders [Sabretooth; Scalphunter; Harpoon; Arclight; Polaris; Vertigo; Scrambler] |
| Synopsis | Erik reveals to the captured X-Men that Gambit gathered the Marauders for Sinister to initiate the Mutant Massacre. |
| Genre | superhero |
| Script | Steve Seagle |
| Pencils | Joe Madureira (p. 1-13, 19-20, 27-36); Andy Smith (p. 14-18, 21-26) |
| Inks | Tim Townsend; Vince Russell; Dan Panosian |
| Colors | Steve Buccellato |
| Letters | Richard Starkings; Comicraft; Kolja Fuchs |
| Reprinted | in Incredibili X-Men, Gli (Marvel Italia, 1994 series) #100 |