They have Saphira who negates which is useful. The enhancement midianites attack does the same thing, negates. Mask of Vanity takes a site. Set Fire kills either a site or a fortress every turn. There are a few cards that make your opponent have to discard a card from hand or give you a site. Overall, it's pretty useful, not to mention Nergalsharezzer and his horses, making cards that steal your sites cbn. They also just got a new weapon class enhancement that helps to get rid of sites but I don't remember the ability. I think it's something like they have to discard a fortress or discard a site.