This 'Game of Thrones' fan theory is peak Lannister

Six seasons into Game of Thrones, Cersei Lannister seems all but invincible, but longtime fans of the series and books know that she can't outrun death.

Among the sprawling web of Reddit theories about Game of Thrones and A Song of Ice and Fire is one little nugget about Cersei: Just who will be the one to end her life?

Recall, if you will, the prophecy foretold about Ms. Lannister's future, starting with her children:

Gold shall be their crowns and gold their shrouds. And when your tears have drowned you, the valonqar shall wrap his hands about your pale white throat and choke the life from you.

The first part of that has already come true, as Tommen, the last surviving Lannister child, died in the Season 6 finale. "Valonqar" is Valyrian for "little brother," which points to Tyrion or Jaime (the younger twin) to kill Cersei dead.

However, the fortune teller's words are "the valonqar," not "your valonqar," which means she could be killed by...any little brother. Or at least someone for whom a key identifier is "little brother." There are barely any Starks left (ha! ha! ugh), but one theory is that this means Jon Snow, the blood-related younger brother of Rhaenys and Aegon Targaryen.

Original image has been replaced. Credit: Mashable

Digital Spy cites a user who says that: "saying this in Valyrian suggests that the person will have Valyrian blood," which also points to the Targaryens, Jon's actual paternal bloodline.

Yet another theory is that Cersei dies at the hand of the Hound, the Mountain's little brother. The Hound likes killing in general, so this would be very on-brand behavior.

Game of Thrones Season 7 premieres July 16 on HBO, and there will be constant theories until then.