I haven't had this mod for so long, so today I tried out Sheaim for the first time. I beelined for Pyre Zombie since they seemed awesome because of their explosion-when-they-die thing. Got around 10 Pyre Zombies and attacked my neighbor, the Amurites. Started with attacking a city, but not a single PZ exploded. Do they only explode when they're defending? Or is it just random if they explode or not? Because if it's just random i must've gotten very unlucky to not get one explosion after 10 tries.