
Remember this guy?
Well, I finally found him in the game, and his "Deadly Dust" is something that boils dwarves alive upon contact with it.
It was flying around the caverns and breathing this dust all around, boiling the military that I sent to fight it. It killed 8 dwarves and 1 dog until it was finally put down by a lucky shot from a marksdwarf's crossbow. What made it worse, is that the majority of deaths were hammer lords, mace lords, and axe lords. Even my captain of the guard and champion succumbed to his boiling extract.