First It would involve a trade for clerics/wizards would be "etching designs"
That could do different things like elemental damage defense fortitude. The crafting of the etching designs wouldn't be easy and would be sold for a high amount of platinum. While to use them it would move onto the smiths lapidermist and leatherworkers.
They would need to purchase etching kits/embroidery kits. That would need to fit in there inventory when crafting the items. Each design could lead to many different things that I would leave up to the balancers of ideas and such. Only GMed crafters could have th skill to do this thing as well. While the kits could do like components and sometimes have some left or run out and go poof.
Please give me soem input I know this would take a bit of coding but it adds a new flare to those who have already mastered the skills and revive pc merchanthood I think!
PS: Note that the etchings won't always work just sometimes depending on luck and favor level
IE A dwarven smith purchases the design and tool kit and etches it into a breastplate. The run glows softly as the design is completed. Or The dwarven smith etches the run into the breastplate and slips ruining the design.







