Love love love your work.
Don't know where to ask this, so I'll ask here. In your example play in SD (page 28), you mention Plague Larvae. And DNGNSTOCK will also randomly generate them. But I can't for the life of me figure out the source reference for them! Where do they come from!? Where do they go!? Where do they come from Cotton Ey.... Ahem. Sorry.
But seriously - What book/add-on/whatnot has Plague Larvae?
Thanks in advance!