Originally Posted by
Doombot
Interesting. Even if it isn't an illusion, I'd bet he has it back by the end of the film. It's just too iconic, even people who know nothing about comics or mythology know that Thor has his hammer.
Now that I think of it, Hela probably destroys Mjolnir near the start of the film if Thor is off having his adventure on the Hulk battle world. It would explain why he doesn't have it in those scenes.
(I haven't read anything at all about the new film, so forgive me if much of the story is already known)