X-Factor (1986-1998) #46

Judgement War! Part 4 of 7. "Exchange!" Story by Louise Simonson. Art by Paul Smith and Al Milgrom. Beast trains the young mutant Nikoh. A startling change comes over Jean, one you won't believe. Meanwhile, if X-Factor's sentient ship is going to escape the hold of the Celestials it must remember who and what it was, and how it came to be what it is now.