Quote Originally Posted by Camelot View Post
I especially like this idea, but instead of calling it "Evil", they just refer to it as "Devil". Creatures can have keywords so that certain effects work on them, kind of like Turn Undead. If a paladin has Smite Evil, it will say in the effect that it works on "devils, demons, elementals," etc (depending on the setting, I suppose, but there would be a core assumption) instead of just saying that it works on "creatures with the evil alignment." So maybe a paladin who follows a god that hates fey creatures can use a similar power to smite anything with the fey keyword.
I like that - a base definition with the flexibility to expand, contract, or change based upon setting, character concept, etc.