I saw someone ask what is the purpose of coal and since i cant (dont know how to) reply to their question im going to post here so hopefully they see it, I came here to see how to get it cause i want to put it in the inventort of Gatcha claus(the christmas dino or whatever that gifts you crystals that turn into random items if you give it coal) but there are probably more things to do with coal such as using it as fuel and more