A huge Frozen II theory suggests Elsa has a secret power, and it makes her much more powerful than she already is. As seen in Disney's Frozen movies, Elsa's powers cover quite a repertoire, from controlling ice to creating life from it, as in the case of the sentient snowman Olaf. In the original Frozen, when Elsa finally accepts her powers, the audience sees her grow stronger with the control of her abilities, and in Frozen II, she is exploring new levels of her powers that she has never experienced before.
Frozen II focuses more on the origin of Elsa’s powers and the history of her parents, people, and magic. She follows a call that only she can hear and ends up on a quest to follow it with her sister Anna and their friends Kristoff, Olaf, and Sven. Along the journey, Olaf tells them that water has memory, this becomes a key part of Elsa discovering her past and the origin of her powers. Throughout the movie, Elsa uses her ice powers to evoke memories from the water, allowing her to see her own and her parent’s pasts and eventually learn that she is the fifth spirit of the Enchanted Forest.Related: Frozen 2's Ending & The Fifth Spirit ExplainedAccording to a new theory (via Reddit), in addition to accessing these memories, Elsa can influence them too, as she has time powers. This theory is based on the idea that the voice Elsa follows is her own. In Frozen II, she sees a series of memories that are not her own, including the moment when Hans met Anna. Elsa destroys this memory, and according to the theory, this act coincides with how Hans and Anna almost fall into the water in their actual meet-cute moment in Frozen. This suggests that Elsa can manipulate past events from that section of the cave, but not change time.
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