Your Bodies Will Collapse

To ensure the accuracy and credibility of the "Prophecy," Thor deliberately described Kino as a prophet—a "powerful prophet."

Star-Lord stared blankly at Gamora. "What he said... is it true?"

Gamora hesitated, then nodded.

Thor looked at Star-Lord again. "You're Star-Lord, right? If you truly love your woman, protect her. If you can't protect her, kill her. If you can't bring yourself to do it, I... absolutely won't let her leave my sight."

Star-Lord grew furious. "What do you mean?"

The other Guardians of the Galaxy also suddenly stiffened.

"I—Thor, the king of Asgard, the realm of the gods! I, Thor, will never stand by and watch an existence that threatens the safety of the universe—even a potential threat to its safety! The Soul Stone has never been seen, which has also made it a legend—the most evil of all the stones. If Thanos finds it, we'll lose ourselves."

In the movie, Thanos had never used the Soul Stone because it was too powerful, too evil, and far too overpowered.

Like the Mind Stone, which could control a person's mind with ease, the Soul Stone... could probably control a person's soul instantly. Like the Inhuman Hive controlling the Inhumans, this stone might be able to control other people's souls, or perhaps... harvest souls in an instant.

In short, it was incredibly overpowered, which was why the movie never described it in much detail.

But things were different here!

"To find the Soul Stone, you have to exchange your closest family member or beloved for it. One thing for another."

Gamora froze.

Star-Lord was stunned. As if struck by lightning, he stammered, "W-what... what do you mean? What are you saying?"

"A soul sacrifice. A life sacrifice! To ensure that whoever possesses it understands how to use it, an exchange is required."