Board Thread:General Discussion/@comment-27464043-20151230192612/@comment-32898255-20180120211020

I like your theory on the soul stone, as Volstagg does state that they have two, but like others have said, him and Sif may not know everything as much as the Collector. I also consider the stone to be on Wakanda in Black Panther, as members of the royal family have to drink a heart-shaped herb to enhanced the black panther's abilities.

Another theory I had is that Thor and the Guardians of the Galaxy will find the soul stone at the Collector's base in Infinity War. As Thor is seen with the Guardians and some leaked footage showed Star-Lord and Drax the Destroyer at the Collector's base when Thanos is collecting another stone.