There have been multiple theories about how the Avengers will go back in time and acquire the Infinity Stones. But, when faced with making a sacrifice to acquire the Soul Stone, what’s going to happen?
Again, in Avengers: Infinity War, Thanos sacrifices Gamora. What can the Avengers do to get their hands on the Soul Stone?
Just so we’re clear, here’s how Red Skull explains what must be down in order to acquire the stone:
“To ensure that whoever possesses it understands its power the stone demands a sacrifice. In order to take the stone you must lose that which you love. A soul for a soul.â€
Article source: https://www.technobuffalo.com/2018/10/07/avengers-4-soul-stone-theories/