asoiaf → Elle Fanning as Daenys the Dreamer.
When Daenys was still a maiden, she had a powerful prophetic dream, showing the destruction of Valyria. Her father, Lord Aenar Targaryen, moved his family and all of their belongings to Dragonstone, an island in the narrow sea off the eastern coast of Westeros. With them, they took five dragons. When the Doom of Valyria came twelve years later, House Targaryen was the only family of dragonriders which survived.