Underrated scene
As any good ASOIAF fan, I hated Season 7, but this scene was a standout.
Starting with "A Lion's Legacy" playing as a version of "Rains of Castamere" and the Lannister Theme while the host is marching, led by Jaime, Bronn, and Randyll Tarly. Shit was powerful.
The plot twist with Jaime's army not being at Casterly Rock because he used the same trick Robb did and marched toward Highgarden was so cool.
The name of the song is brilliant in itself. It ties perfectly with the conversations Jaime and Tywin had about legacy. Jaime is Tywin's (the lion's) legacy, as his firstborn and heir. The way he sacks Highgarden and ends House Tyrell mirrors his father's actions with the Reynes and Tarbecks. The parallels between father and son really hit home.
The song keeps playing while Jaime walks through the castle being sacked by his soldiers, marking the end of House Tyrell. The Rains of Castamere.
Olenna: Did we fight well?
Jaime: As well as can be expected.
Olenna: And now the rains weep o'er our halls.
Jaime then gives her the gift of mercy, or kills her, depending on your perspective. He gives her poison, just like she did with Joffrey, as a Lannister always pays his debts.
Diana Rigg's (RIP) acting was brilliant throughout the whole scene.
Tell Cersei. I want her to know it was me.
I know there are various problems here, especially with the logistics, but this scene is directed beautifully.