I'm not sure if this is a bug, an overpowered feature, or just random chance, but it seems every province I move my Machakan priest guy who is stealthy (can't remember the unit name) to has a magic site. I don't have to search with him or anything, and he has no mage skill whatsoever, so I figure stealthy units must be able to get reports on sites in enemy provinces. But EVERY province? It's almost like the game is reporting every site that exists, not just the ones that have been discovered yet! Then again, at least some of the territory I'm exploring was IIRC previously owned by Arcoscephale, so it's likely they did a thorough search of their lands...