[Norfleet]

Smiths are not immune to magic scale: If you actually took Magic with Ulm, they'd benefit from the magic scale. However, they are not HARMED by Drain scale.

As for why the sages don't benefit, well, that's just a mystery. I do recall you weren't supposed to benefit from the magic scale of somebody else's dominion, but I'm baffled as to why the smiths get it, but the sages don't.