X-Men #240 — Marvel Comics (Inferno) 1989

Vault Notes:

• Part of Marvel’s Inferno crossover event from the late 1980s
• Features the X-Men facing demonic incursions tied to Limbo and Madelyne Pryor
• Strong example of the darker tone and supernatural themes of the era
• Connects directly to broader X-Men and New Mutants storylines
• Recognized by readers completing the Inferno reading order
• Notable for its striking, action-heavy cover art and event branding