The Loot Train Attack in episode four of this season of Game of Thrones was undoubtedly one of the seasons highlights. We already knew it was an impressive marriage of practical and visual effects but, until you see this video, you wont realize just how impressive it was. The below video by Iloura shows the time lapses layering of all kinds of visual effects and it’s so massive I couldn’t help but laugh through the entire thing. It just sucks we have to wait so long to see what the final big, surprising battle is going to be.”]
Source: https://gizmodo.com/the-vfx-video-for-game-of-thrones-loot-train-attack-is-1804632255