Hello fellow citizens of Cairn,
I was playing today and I was looking through my blueprints and I saw that the Forgotten Gods smith could exchange rare mats, including Celestial lotus and even more bizarrely, the Heart of Darkness, usually only crafted at one smith.
I checked the smith at Devils crossing and Homestead. same story. I searched around the forums and found this thread Сraftsmen of Cairn and this seems to indicate that only specific smiths can craft these items.
Ignus - bewitched smith
Devils crossing and homestead smiths
Heart of Darkness (was at all 3 smiths)
I might well be blind, but this seems new to me.
(sorry if formatting is terrible, first post and all)
EDIT: i have no mods installed.