Fantastic Four vs. X-Men #3

In "By the Soul's Darkest Light," Franklin's desperate plea pushes Kitty to fight for her fading existence, as the X-Men and Doom prepare for a race against oblivion. With Reed's journal revealing unsettling truths, the Fantastic Four make the bold decision to journey to Latveria, joining forces in a high-stakes effort to save her. Written by Chris Claremont and illustrated by Jon Bogdanove, with inks by Terry Austin and colors by Glynis Oliver, this 1987 Marvel clash blends emotional urgency with the kind of inter-team tension that defines the era—captured perfectly on a cover by Bogdanove and Austin.