The Torch God is an event that is initiated by clustering a large number of Torches underground. It consists of dodging projectiles, and survivors are rewarded with the Torch God's Favor, an item which gives the player the option for their Torches to automatically match the biome they are in. Making sure Torches match the biome type they are in will positively influence the player's luck in most areas. from terraria wiki(link could not be copyed) as you read its not very helpful its a event like EoL a bullet hell like event it mainly used as cosmetic purposes only speed runners use them as a part of the speed run too but thats kind of unlikely. How to start. you can start it by placeing around 100 torches underground well if you want a part 2 leave a like.