Thor #282 Apr 1979
"Rites of Passage"
After Thor tried to travel back in time to when the Celestials first appeared on Earth, he ended up in Limbo with Mjölnir vanishing from his grasp;
In Limbo, the Space Phantom led Thor into a trap;
Now, in the present, the Space Phantom realizes that whatever he had planned for Thor is not working and checks in on him;
He discovers that he is losing his godly attributes and transports him out;
Thor returns to normal and confronts the Phantom;
He tells Thor that he does not know where Mjölnir is but he thinks he can find it;
He leads Thor to the castle of Immortus, where they are confronted by Tempus;
Thor and Tempus battle back and forth, until finally, using Tempus' own club, he is defeated by Thor;
Thor and the Phantom enter the castle and find Immortus holding Mjölnir.
Script by Mark Gruenwald and Ralph Macchio,
pencils by Keith Pollard (breakdowns) and
Pablo Marcos (finished art),
inks by Pablo Marcos