Can you place Guards on your opponent's Site?
"Place on a Lost Soul site. Each evil character gains 3/3 until end of turn when blocking a rescue at that Site."
Very nice. I can't remember if you have to be making a rescue at that particular Site if you have access, or if you do only when your opponent says you are (like for the Site Guard LS). Either way, that's a nice idea. Too bad the EC's don't gain the 3/3 until they enter battle, otherwise I might put that card in my Watchful Servant deck.