Last fall, George R. R. Martin and Ryan Condal’s sweeping, rapturously reviewed Game of Thrones prequel House of the Dragon ended on a truly heart-stopping note: the staggering shots of Prince Lucerys Velaryon (Harvey Sadler) flying away on his dragon, Arrax, with the white-haired, eyepatch-wearing Aemond Targaryen (Ewan Mitchell) in pursuit on the significantly larger and more ferocious Vhagar.