WARNING MAJOR SPOILERS FOR THOR RAGNAROK
Over the last decade of Marvel Cinematic Universe movies, five out of six of the Infinity Stones have been revealed in the form of Space, Mind, Reality, Power and Time.
While their powers and locations are known, the Soul gem is still to be revealed with just Thor Ragnarok and Black Panther to go before Avengers Infinity War.
Fans lucky enough to have seen the Asgardian prince’s latest adventure will remember the scene when Hela enters Odin’s vault.
After calling the second Infinity Gauntlet a fake, and knocking it to the ground, she admires the Tesseract – also known as the Space Stone.

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However her main interest is in the Eternal Flame, last seen in the first Thor movie.
Odin stole the inextinguishable flame from Surtur so he couldn’t light his sword and bring about Ragnarok – something that actually happens at the end of the movie.
Now what’s interesting about the Eternal Flame is how Hela uses its power to resurrect the souls of the dead who come under her command.
Here’s the theory: The eternal flame is another form of the Soul Stone.
After all, it has the power to control the souls of the living or the dead and the flame and essence is orange – the same colour as the Marvel Cinematic Universe’s Soul Stone as seen in Guardians of the Galaxy’s description by The Collector.
Avengers: Infinity War is released in UK cinemas on April 27, 2018.