All but one of the six Infinity Stones, the orange Soul Stone, have showed up in the Marvel Cinematic Universe. With the release of the new Infinity War trailer, we have a pretty strong feeling that it resides in Wakanda with Black Panther

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If you haven't already, check out the trailer below.The trailer for Infinity War shows a massive battle taking place in a location that appears to be Wakanda or just outside of it, with a big team of Avengers leading the charge alongside Black Panther and the Wakandan army. They’re fighting against the Outriders, the alien army belonging to Thanos. Thanos is out to gather all the Infinity Stones to complete the Infinity Gauntlet and gain god-like power, so if he’s sending his army to invade Wakanda, it seems obvious that an Infinity Stone is there.Now, why would Black Panther have the Soul Stone? In the comics, Black Panther has the power to commune with the spirits of his ancestors. He does this by consuming the Heart-Shaped herb in a ceremony and entering the necropolis beneath Wakanda, a spiritual place where only the chosen can enter. But given that magic doesn’t exist in the MCU, the simplest solution would be for T’Challa to do all of that with the Soul Stone. Perhaps there will be a temple in the movie that is powered by the Soul Stone, and by harnessing its power T’Challa can communicate with the souls of the dead.In the comics, the Soul Gem, as it’s called there, had numerous powers, including the ability to gain knowledge from souls and steal the souls of others. Most interestingly, it was the doorway to the “Soul World,” a pocket dimension where captured souls reside (and was essentially the realm of Adam Warlock, keeper of the Soul Gem). This place has always been depicted as a country landscape with grassy fields and mountains off in the distance. In the Black Panther trailer, T’Challa seems to be on a spirit journey in grassy plain with dazzling purple skies, a place that looks not unlike the Soul World.The Infinity War movie is clearly taking inspiration from the Marvel comic event simply titled Infinity (by Jonathan Hickman with artwork by Jim Cheung, Jerome Opeña and Dustin Weaver). In that story, Wakanda is invaded by Thanos’ army, lead by Black Order member Black Dwarf (called Cul Obsidian in the movie), after Thanos is tipped off that an Infinity Stone is there. That tip ended up being a lie told by Namor because he hates T’Challa, but it looks like in the movie, it just might be true.What do you think of our theory? Let me know in the comments!

Joshua is IGN’s Comics Editor. If Pokemon, Green Lantern, or Game of Thrones are frequently used words in your vocabulary, you’ll want to follow him on Twitter @JoshuaYehl and IGN