In House of the Dragon's third season, dragonfire was put front and center: not as a single dramatic strike, but as a sustained, sky-wide barrage raining down on entire armies. Bahador Mehrpouya, FX Supervisor at Rodeo FX, walks through how the studio's fire simulation pipeline evolved across the season to meet that demand: the technical challenges of scaling fire simulation to battlefield proportions, the look-development choices that gave the battle of Tumbleton its distinct visual signature, and the workflow innovations that let the team deliver believable, large-scale destruction under a punishing episodic schedule.