Man, there are a lot of these buggers, but they do get easier (and better) every time I redraw them. Telling you anything about them would ruin the fun*, so I've just thrown together a collection of some of my favorite spell and skill icons for your enjoyment:
Still have to draw animated effects for most of these. Urrgh.
* whereas "the fun" refers to how much fun I have as people try to guess what the hell some of these skills do.
[Originally written for the Gaslamp Games blog, where we all write about development and other random stuff.]