I'm not sure what the "something else" you're referring to, but no, I intended fire to be amongst the first spells if not the first one you cast. Of course there's a little more to casting fire later down the road ;)
Thank you so much for playing the game and giving feedback! My next goal (besides adding easter eggs) is to give more hints when you draw a symbol that almost should work but doesn't. I hope that would take some of the guess work out of it!