There is a story seed that I could swear I came across in one of the books regarding the mechanica of Heron that I want to try and incorporate into my saga. The general idea is that a pair of grogs return to the Covenant with some artifact that could potentially be mechanica, but that's all I can seem to remember about the seed.
Anybody know what I'm talking about here? Anyone know which book this is in? I pored over Ancient Magic, TSE, Grogs, City and Guild - nothing. I can't seem to find where I found this originally, and it's bugging the drek out of me. If anyone has an idea, please let me know.