Hey guys, thanks for posting your tutorials on level design as quest coding. I know you guys are busy improving my games, but if I were to ask the next tutorial, I want to know how to modify spells or create your own spells.

Thanks.

Have a look here. Under "3. Adding new skills/items to the game" should be described how to add skills.

Skills are odd in that modifications to existing skills don't tend to work, and while new skills can be made there is often a bug where every other skill in the game gets mixed up upon New Game.