The X-Men #105

In "Phoenix Unleashed!", Jean Grey’s dormant Phoenix powers resurface as Eric the Red manipulates Firelord into attacking the X-Men, forcing her to confront the growing danger. With Lilandra arriving on Earth only to be captured, Professor Xavier sends the team through a space portal to rescue her—just as the full force of the Phoenix begins to stir. Written by Chris Claremont and illustrated by Dave Cockrum, with inks by Bob Layton and colors by Andy Yanchus, this pivotal issue features a cover by Dave Cockrum that captures the escalating tension.