Uncanny X-Men #134

134

"Too Late, the Heroes!"

June 1980

After a huge fight with the Hellfire Club, Jean 'overloads' Mastermind

marvel.com

reprinted in

* 40 Years of X-Men 2005, in collection (2005*)
* Uncanny X-Men: Dark Phoenix Saga TPB 1991, in collection (1991*)