What about new features, like a Paladin being able to cast divine spells at 4th level? Is that suddenly granted to him, or should he require some kind of training much like 1st-level clerics would go through? Or how about Ranger gaining a new Favored Enemy? Should I limit his choice to the monsters he's exposed prior to gaining this feature, or should I allow him to seek training from another ranger for a monster he never knew?Staffan said:I answered "No, adventuring is how you get better at adventuring", but on second thought I would require training in some circumstances: certain prestige classes and feats would require access to someone to learn them from. Those are exceptions, and not the rule, though.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.