The X-Men #83-Fine (5.5 – 7) 2nd Appearance of Banshee

Banshee calls to the X-Men for help against a mysterious spider creature, and when the young mutants run across Spider-Man, they mistake him for their foe and a battle ensues; reprinted from issue 35.
(NOTE: 1st appearance of Changeling, later reintroduced as Morph in the alternate realities of the X-Men animated series and Exiles (2001))