The Avengers #84

Arkon is back — and he's brought a threat big enough to shake two worlds. The cover by John Buscema and Sal Buscema throws Thor into a desperate mid-air battle, hammer raised, while below him the Vision and another Avenger lie fallen and a green-clad sorceress stands at Arkon's side, his boastful challenge hanging in the air. Roy Thomas's "The Sword and the Sorceress!" promises high-stakes Marvel adventure at its January 1971 best.