The New Mutants #26 (1983 1st series)
First 65-cent cover price issue. 1st full appearance of Legion. Cover art by Bill Sienkiewicz. Legion, script by Chris Claremont, art by Bill Sienkiewicz; Gabrielle Haller's autistic son begins exhibiting telepathic, telekinetic, and pyrotic powers; Prof. X and the New Mutants come to help; Wolfsbane encounters Rev. Craig again; Emma Frost gives Empath an ultimatum; Magneto and Aleytys begin a relationship.