The Greens have the largest dragon in the world, but they are on a quest for the balance of power with Queen Rhaenyra raising an Army of Bastards on Dragonstone. Rhaenyra has an answer for Vhagar with Syrax, Vermithor, Silverwing, Seasmoke, and potentially Sheepstealer. Vhagar and Aemond will be overpowered if the remaining Green Dragonriders, Helaena and Daeron, do not stand by them in House of the Dragon.