Avengers Vol.1 #61
A quiet night at Avengers Mansion is interrupted by the sudden arrival of the Master of the Mystic Arts! Dr. Strange warns that the Spell of Fire and Ice unleashed by the Sons of Satannish could destroy the world! And he requests immediate help from Earth's Mightiest Heroes! Without delay Hawkeye and the Black Knight rush to Antarctica to battle Surtur, while the Vision and T'Challa fly to Africa to fight Ymir! The Fire Demon and the Frost Giant are virtually indestructible! Does Doctor Strange have a magic ace up his sleeve (or perhaps cloak) to save the Earth?
Printed: Feb 1969
Writers: Roy Thomas
Art: John Buscema and George Klein
Cover: John Buscema and George Klein