Neat game, but a little buggy. The fireball doesn't seem to work. I cast it right in snakes' faces several times but it did nothing. The shops inventory also seems to be global, since I bought two items from a shop and the next shop had two missing. Then I bought the remaining two items and the rest of the shops never had anything.

I like the random spell generation. Pretty clever how you generate the names. It could do with some tweaking though. I managed to get a spell that cost 3 mana but gave 5, so I basically had infinite mana. I also had a spell that gave me money, so I had infinite money too. 

the light effect is really interesting concept for a RL