Uncanny X-Men #277 (VF)

The X-Men fight the Starjammers, who are Warskrulls in disguise. Inside their ship, Gambit helps the X-Men, while Lila Cheney and Deathbird locate the Warskrulls' matrix. Charles Xavier mentally guides Lila to teleport the rest of the X-Men into that chamber where another big fight erupts.