I kind of love the idea that Aurinyan has done some sort of regression analysis to plot "incompetence of patrolle" and "type of not-yet-disastrous gathering" against "size of inevitable doom" and has carefully scaled his event to get the right outcome at a price he can afford. "If I put Paladin Archer in the mix, I get another tribe of fire Orcs and a massively drawn-out honour dual. Good. If I hold it in the abandoned city, I can drop four patrollees and still get the same amount of Doom."