I know I can imbue/reforge up to 100 then enhance to 140. However, I'm trying to figure out what runic to use to get the shield up to 150 luck so I can enhance it up to 190. I'm not 100% certain it is possible, however I was able to get 150 luck with my other armor pieces so I an assuming it is possible to do so on shields as well. Any help is appreciated. Thanks!