In one of the coldest mic-drop moment of Game of Thrones, Olenna Tyrell drinks the poisoned wine Jamie Lannister gave her, choosing dignity over humiliation and just before death takes her, she looks at Jamie and delivers her final blow, confessing that she was the one who killed his son Joffrey Baratheon.
No fear, no regrets. Just one last ruthless victory and a message meant for Cersei Lannister, and she was right about the impending destruction of Jaime because of his devotion and blind loyalty to Cersei tyranny.
This is the moment that divided fans of game of thrones. A moment that got fans and viewers of game of thrones in disagreement.
Regardless, Arya Stark, was trained and mentored for this moment.