@izzion said in The Perplexing Complexity of Failure, a local dwarven government:
@Weng
Well, the most recent encounter in ImpMisA was a graveyard, lots of undead. Seems to have been spontaneous necromancy though, rather than an actual necromancer.
Dammit, now I need to find some wood to knock on...
I haven't looked closely at the save/maps, but some evil biomes can have a resurrection effect on anything within their square on the local map. It's randomized, and the only way to know is to test it (or DFHack).
Necromancer attacks will only happen if you're within 10 world map squares of a tower (Tab on embark screen to check). They can happen at any point until the tower runs out of necromancers. Necromancers can ambush onto the map and invisibly raise stuff. You're going to want a LOT of hammer dwarfs to put them down, and you don't want anything that can dismember crud, because of a bug where a moving feather and such can't be put down and it can end a fortress by itself.