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Game of Thrones: The Night King's Greatest Enemy Isn't Jon Snow

As we count down to Game of Thrones' final season, a major talking point is who'll be the person that displaces Cersei (Lena Headey) and ascends the Iron Throne to rule all of Westeros. There are some dark horses such as Sophie Turner's Sansa Stark, but the favorite is (unsurprisingly) Kit Harington's Jon Snow.

Many fans believe that it's the next step for the young warrior to take once he fulfills his destiny as the man who slays the Night King. But while most eyes are focused on Jon's rivalry with the leader of the ice zombies, the biggest threat doesn't come in the form of the Warden of the North who shares Stark and Targaryen blood. In fact, given what's transpired in the seven seasons so far, the Night King's biggest enemy is none other than Jaime Lannister.

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Nikolaj Coster-Waldau's Kingslayer has long been going through a redemptive, and in the latest trailer, there's a crucial exchange hinting why Jaime's going to hatch the Night King's downfall. In a key scene, Jaime tells his sister/lover Cersei, "I promise to fight for the living. I intend to keep that promise!" indicating he'll be leaving her and joining Jon's alliance in the North. He's already witnessed one of the Wights when Jon brought it to King's Landing, and Jaime knows if he sides with Cersei and Euron Greyjoy (Pilou Asbæk), there won't be a throne left to defend as the Night King will take out Jon's weakened army.

But Jaime doesn't just bring strength or military smarts -- he has a tool that the White Walkers simply won't be able to overcome. Though everyone's looking at Jon, the two dragons Daenerys (Emilia Clarke) is bringing to the coalition, the shards of Obsidian aka Dragonglass, and whatever other mystical tools Samwell Tarly (John Bradley) finds as big weapons, Jamie has the ultimate one in Wildfire.

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Cersei has stocked up on the explosive substance at King's Landing. She used the volatile liquid to destroy Stannis Baratheon's army, and to take out her enemies in order to seize control of the throne herself. And in both cases, we've seen that Wildfire can be used as a slowly-traveling flammable river, or as a weapon of mass destruction, like a nuclear bomb. Jamie's been monitoring Cersei's movements closely, his trust in her waning bit by bit. Their children are all dead, and with Euron entering the picture as a potential husband, not to mention her plans to rebuke Jon's alliance, it's all too obvious: Jamie needs a power play if he's to truly protect the Seven Kingdoms and cleanse the Lannister legacy.

Stealing Wildfire and taking it to Jon not only cripples the Wights, it severely weakens Cersei's rule (should they make it that far). We actually see Cersei in a moment of apparent madness in the trailer, where she's laughing and crying at the same time, hinting that not only will Jaime leave her, he's might have secreted away her most powerful weapon. She seems bemused by her own personal tragedy and chooses to sip on some wine, while Jamie finally gets to bring his redemption full-circle.

Game of Thrones The Nights King and the White Walkers

Ultimately, Jaime does want to save the free world. Becoming the biggest thorn in the Night King's side would allow him to be another Kingslayer, just like when he had to slaughter the Mad King Aeyrs, a Targaryen of Fire. Now, Jaime will likely be bringing an end to the King of Ice, and while it won't be a one-on-one fight -- let's be honest, that's reserved for Jon -- Jamie can deal the Night King his biggest blow by destroying his frigid zombies.

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As fierce a warrior as the Night King is, he's nothing without his undead legion. Jamie may not be dealing the icy overlord the killing stroke, but with his firepower, he could bring the heat literally, paving the way for Jon to kill the Night King once and for all.

Season 8 of Game of Thrones, the show’s final season, will premiere April 14. It will feature six episodes with longer than usual runtimes. The HBO drama stars Peter Dinklage as Tyrion Lannister, Nikolaj Coster-Waldau as Jaime Lannister, Lena Headey as Cersei Lannister, Emilia Clarke as Daenerys Targaryen, Sophie Turner as Sansa Stark, Maisie Williams as Arya Stark and Kit Harington as Jon Snow.

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