The Silver Surfer #12 [Jan. 1970], by Stan Lee, John Buscema and Dan Adkins.
Near Stonehenge, a coven of witches practices their witchcraft. Above them, the Silver Surfer tries to force himself through Galactus’ barrier. Unsuccessfully, though. The collision with the barrier knocks him out and he crashes near Stonehenge. [1/3]
The witches' leader, Warlock Prime, finds the unconscious #SilverSurfer and takes him to his home. When the Surfer revives, he is tricked into drinking a sedative. Warlock Prime plans to destroy the Surfer to prove the coven's power to the world.
To destroy the Surfer, Warlock summons the Abomination, an old Hulk's enemy. However, he's unable to control the Abomination, who sets off to take the world. The Surfer wakes and is told that only he can stop the Abomination. [2/3]
The #SilverSurfer attacks the Abomination and defeats him after an extenuous battle. He takes the Abomination to the coven and demands they send him back to where he came from. [3/3]