There is a file named something like spelleff.dat. I am at work and can't
look, but it is close to that. Anyway if you look at it with a hex editor
you can see the names of all the spells in the game. Some things like poison
which are not spells are treated as spells by the game engine. There are two
fireworks spells. There is also one called aqualung. That does not mean
there is a way that we can create them, but they are in the game at some
level.