This was not the work of any of the dragons. They could scarcely cause this, and their flames were the wrong colour. The Northern one was blue streaked with black, and the cream-coloured drake had golden flames. With a shudder, his mind thought of wildfire, but the green piss was... green. Mayhaps the alchemists could concoct a flame of a different colour, yet that would be hard when all of them were little more than ash in the ruins of King's Landing.