Watch full The Dragon Prince Season 3 Episode 9 full HD online. Cartoon video The Dragon Prince Episode 9 online for free in HD. Viren's army arrives at the Stormspire, where elves, humans and dragons unite to oppose them. The army of Duren arrives and joins on Xadia's side, turning the tide of the battle. Viren uses the distraction to slip into the Dragon King's lair to drain Zym's essence; to save him, Rayla pushes Viren off the mountain to his death.