I like the combining of genres and settings to produce something new. They had spies in the Renaissance times, each prince/ household against the others. I could see a campaign of spy vs spy set in Italy in the late 1300s. Go to Comment
I don't think it would skyrocket, as after a while people would realize that nobody comes back. I would think it was quarentined.
Very cool if the PCs were inside the city, solved the problem, then had to deal with the repercussions to their lives being gone for a couple of years - especially if they were important or on an important mission when they were passing through. Go to Comment
While walking through the mountains, emerging from several small crevasse near you and begin attacking the party member with the most exposed skin. The Beez are creatures the size of a fist, with minimal stats but high agility. There is ten or more beez. Their sting causes a immediate loss of hitpoints.