[HoneyBadger]

Gandalf's got a really good idea there, that would add a lot to the RPG aspects of the game:

How about having magic sites in the game that, when you discover them, either the mage discovering them is attacked by an assassin linked to the site, or the whole province itself is attacked? Or that caused a specific event to happen?

Ofcourse, we'd have to get the Devs interested in this one, but it could make site searching a lot more interesting--particularly if these types of sites weren't activated, or even revealed, by site-searching spells.

Maybe there could even be some special abilities for units that allowed them to find all sites of a specific level, say 1-3.

You could have Elemental Affinity, which gave the unit the ability to find sites of Air, Earth, Water, and Fire,
Natural Affinity, which allowed the unit to find Nature, Astral, and Death,
and Divine Affinity, which would allow the unit to find Blood and Holy sites.

These abilities would be balanced against the risk of that unit running into an assassin it couldn't handle, or unleashing a scourge on the whole Province--and until you defeated the site's guardians, you wouldn't get any benefit from it.

Ofcourse, units of this type would charge a lot of gold for their special abilities, so losing them would be a financial pain, and they might be very hard to replace.