House of the Dragon episode 4 — out now on HBO Max and Disney+ Hotstar — is all about how quickly fortunes can change. By midway through episode 2, Prince Daemon Targaryen (Matt Smith) had made an enemy of his brother, King Viserys (Paddy Considine), for stealing a dragon egg and styling himself Lord of Dragonstone. Daemon further angered him in episode 3 by starting a war in the Stepstones and dragging the Crown into it. Yet, at the…