Or you could mod one of your nation's national commanders to have 9 in every path and a +100 research bonus. Then recruit as many as you want and set them to research construction. Once you reach Cons-8, forge whatever you want. You also can get a bunch of site searchers this way, not just one (so you can build up some gems without running into problems with #startspell).
Don't forget to disable this mod before playing real games where the AI is playing that nation...
