Game of Thrones
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Long before events in "Game of Thrones" unfolded, Cersei Lannister was told by Maggy the Frog, a fortuneteller, that she would one day become the queen. Although she will have power, her life will be filled with tragedies and she will outlive her three children, and this happened in the Season 6 finale of "Game of Thrones," when her youngest, Tommen, jumped to death and he realized his mother's role in the explosion of the Great Sept.

Cersei was devastated when Joeffrey died and she was inconsolable when her only daughter, Myrcella, was poisoned by the Sand Snakes. But it looks like Cersei was prepared for Tommen's death. After seeing her youngest child's body, Cersei coldly ordered Qyburn to burn it and spread the ashes over what remains of the Sept.

The next season, which is expected to air in April 2017, might explore more of the prophecy, which predicted that Cersei will be queen until "there comes another, younger and more beautiful, to cast you down and take all that you hold dear."

Initially, it was believed the prophecy was alluding to Margaery as the beautiful and younger person who will take Cersei's place. But it looks like Maggy the Frog was talking about Daenerys Targaryen.
The prophecy also talks about Cersei's death. "When your tears have drowned you, the Valonqar shall wrap his hands about your pale white throat and choke the life from you," Maggy said. The word "Valonqar" means "little brother" in Valyrian and it was always assumed that Tyrion will be the one to finish off his sister.

But Jaime is also a possible candidate. Although Jaime and Cersei are twins, the queen came out of the womb first, making Jaime her little brother. As for what will cause him to kill his sister, speculations are rife that Tommen's death could be a possible motive. As fans of "Game of Thrones" know, Tommen was Jaime and Cersei's last remaining child.

Find below the end prophecy:

Cersei: When will I wed the prince?
Maggy: Never. You will wed the king.

Cersei: I will be queen, though?
Maggy: Aye. Queen you shall be... until there comes another, younger and more beautiful, to cast you down and take all that you hold dear.

Cersei: Will the king and I have children?
Maggy: Oh, aye. Six-and-ten for him, and three for you. Gold shall be their crowns and gold their shrouds, she said. And when your tears have drowned you, the valonqar shall wrap his hands about your pale white throat and choke the life from you.