Soul fire is a turquoise variation of fire that is created when soul sand or soul soil is ignited and generated exclusively in soul sand valley biomes in the Nether or in the ancient city‌. You can light a fire with a flint and steel. You can get these tools through trading - farmer villagers would trade flint and steel for emeralds, but it was possible before Java Edition 1.8. Fanart Minecraft cursor pack with Flint and Steel and Soul Fire.