Shanghai Billboard May Hint at Thor Power Upgrade in Avengers: Doomsday

A Shanghai billboard for Avengers: Doomsday shows Thor wielding Stormbreaker amid yellow lightning.

The unusual color has led fans to wonder whether he will use the Odinforce, a powerful force linked to Asgard's kings.

Thor has not used this power in the Marvel Cinematic Universe, and the billboard does not confirm that he will use it in the film.

In Marvel lore, using the Odinforce can require its wielder to enter Odinsleep, a period of unconsciousness while recharging.

That possible cost could give Thor a serious choice as the Avengers face Doctor Doom.

The film's teaser trailers have also shown a more serious version of Thor than in some recent Marvel films.

Whether the billboard hints at the Odinforce remains unclear.