[DF] Path/Book mages in DF?

[Kromm]

I was thinking about Path/Book casters replenishing their charms between action scenes, or simply off-screen – not over a period of hours, much less only in town. Specifically, a well-designed Path/Book variant could easily support Path/Book casters preparing a small number of charms as the cleric heals, the scout scouts, the thief picks locks, etc.; we're talking a span of minutes here. Another approach would be to let Path/Book casters simply buy the ability to use a small number of charms per game session, much as how Gizmos works. Either model would require customization, which is why you'd need to summarize an entire magic system and not just offer a template plus a bunch of Paths and rituals. And neither possibility would affect the other PCs' use of time at all.