-The Eberron basic class, which seems to not have spell-casting ability except through creations
-A prestige class which advances in spells known, but not spells perday
-A prestige class which advances in both spells known AND spells per day
The feats and abilities for the class seem to be kind of varied, too.
So, which do you think is the most balanced? And where did it come from? I'd much prefer to use something official than some fan thing from the web.