| UPDATED: 08:06, Wed, Mar 10, 2021 Link copied Sign up for FREE now and never miss the top Royal stories again. SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. Avengers Infinity War saw Thanos successfully collect all six Infinity Stones. One of these was the Soul Stone found on Vormir, which required the sacrifice of his daughter Gamora. Of course, when the Marvel superheroes reversed the Mad Titan’s Snap they needed another sacrifice for the Soul Stone, which ended up being Black Widow – and it’s a popular new fan theory that argues that this is the real reason Thanos lost in Avengers Endgame.