So, following along with the above steps/previous posts, would it be at all possible to alter the affects of, say, the "Divine Light" skill to make it less useless? Like, maybe add something like a damage-undead-only attribute to it and nothing more? Would I need to use the 4-player-coop mod as a base or is this something that can be done by just creating a new mod?

Sorry if this has technically been answered already in this thread, but I've been knee deep in the editor for most of the day, trying to make sense of it all and my mind is a bit shattered.