[Anders]

Originally Posted by Icelander

I want to reflect the fact that inside their thresholds, wizards might have magical tools for comparatively trivial tasks, but outside it, only very powerful ones can make any tools that last. The difference in power available is at least one order of magnitude, mostly in that within a threshold, items can last months or years even if made by a fairly modest practisioner, but outside it, only puissant wizards can create anything which lasts beyond a few days.

Make the outside world Low-Mana for tools. Anyone who wants to make or use a tool outside the house suffers a -5 penalty to all rolls.