(Warning: Spoilers ahead for House of the Dragon.)
Westeros needs dragons. With Rhaenys and Meleys gone, there’s only one big dragon left in the skies with a rider, and the looming threat of Vhagar has brought the steadily amassing armies to a standstill.
The western forces of Houses Lannister and Lefford won’t march for the Greens unless they have a dragon above their heads. Criston Cole (Fabian Frankel) is reluctant to march on Harrenhal because of the threat of Daemon (Matt Smith) and Caraxes.