Ilosar
Vault Fossil

The finale actually has several major book deviations that has book purists up in arms. Myself, I think most of them work very well in the context of the show, but one change in particular still bothers me;
At this point anyway, the show is a separate beast from the books, and it will only increase in divergence. On the one hand, it's kinda good because Martin is not an infallible writer by any means and the showrunners will be able to trim the fat around some of the worst storylines in books 4 and 5. On the other hand, they aren't as good writers as GRRM (for obvious reasons) so several of their changes also kinda fell flat already. I still love the show and will still watch it religiously, but it's something to consider.
In the books, when Jaime rescues Tyrion, he also tells him that Tysha, the wife Tyrion had when he was 13 and that Tywin had gang-raped in font of him eyes (it was talked about in season 1 episode 9), was not a whore as initially suspected, but did indeed love him. This sends Tyrion in an absolute fury, as Jaime, who was otherwise his beloved big brother, participated in the lie until then. Tyrion gets very nasty with Jaime, telling him Cercei cheated on him multiple times and that he did kill Joffrey (which he obviously didn't) just to hurt him, and the brothers have a falling out. The reveal is also what sends Tyrion in his murderous spree, and he kills Shae in cold blood, she never attacks him in the books. The Tywin conversation however is still mostly intact and very, very well done.
Hell, in general Book!Tyrion is a way, way worse person than Show!Tyrion. In the books he's a murderer, has much less concern for those around him in general, is in a constant state of self-pity, and becomes absolutely loathsome in book 5. He's still a great character to read about, mind you. I get that they wanted to whitewash him a bit in order to have a ''good guy'' in King's Landing after Ned is demoted to head on spike, but IMO they went a bit too far and removed a bit too much grey from him.
The rest of the changes I can live with. Brienne vs Sandor never happens in the books but it's such a great fight, and is so superior to Brienne's dreadful arc in book 4, that I love it anyway. Jojen Reed never dies in the books, but I guess his role was over anyway. At the end of book 3 we also get Lady Stoneheart introduced; she's Catelyn Stark, resurrected by Thoros of Myr and Beric Dondarrion, of the Brotherhood without Banners. There was a lot of disappointment that she didn't end up in that finale. Then again, in the books so far she just sits around and hang Freys, so it's very possible they will only include her in season 5.
Hell, in general Book!Tyrion is a way, way worse person than Show!Tyrion. In the books he's a murderer, has much less concern for those around him in general, is in a constant state of self-pity, and becomes absolutely loathsome in book 5. He's still a great character to read about, mind you. I get that they wanted to whitewash him a bit in order to have a ''good guy'' in King's Landing after Ned is demoted to head on spike, but IMO they went a bit too far and removed a bit too much grey from him.
The rest of the changes I can live with. Brienne vs Sandor never happens in the books but it's such a great fight, and is so superior to Brienne's dreadful arc in book 4, that I love it anyway. Jojen Reed never dies in the books, but I guess his role was over anyway. At the end of book 3 we also get Lady Stoneheart introduced; she's Catelyn Stark, resurrected by Thoros of Myr and Beric Dondarrion, of the Brotherhood without Banners. There was a lot of disappointment that she didn't end up in that finale. Then again, in the books so far she just sits around and hang Freys, so it's very possible they will only include her in season 5.
At this point anyway, the show is a separate beast from the books, and it will only increase in divergence. On the one hand, it's kinda good because Martin is not an infallible writer by any means and the showrunners will be able to trim the fat around some of the worst storylines in books 4 and 5. On the other hand, they aren't as good writers as GRRM (for obvious reasons) so several of their changes also kinda fell flat already. I still love the show and will still watch it religiously, but it's something to consider.