X-Man (1995) #69

Shockwave: Part 3 of 4 – “The Infinities of Evil: Double Vision!” Story by Warren Ellis and Steve Grant. Art by Ariel Olivetti. The most epic X-Man tale to date continues as Nate Grey suddenly finds himself face-to-face with…himself?! Startling secrets will be revealed and lives will be lost in the penultimate chapter to Shockwave.

Note: reference picture, not an actual scan (product is NM)