Actress Emilia Clarke prepared for her epic speech in last Sunday’s final episode of “Game of Thrones” by studying the evil orators of history — including Adolph Hitler.

In an early scene, Clarke’s character, Daenerys Targaryen, addresses an assembled horde of her Unsullied and Dothraki warriors using both English and made-up languages from the show.

To prepare for the climactic moment, Clarke watched videos of dictators who spoke in foreign languages, she told Variety in an interview after the episode aired.

“In giving all these speeches in fake languages, I watched a lot of videos of — now it seems funny — dictators and powerful leaders speaking a different language to see if I could understand what they were saying without knowing the language,” she said.