Remember that time you saw an image showing what attributes you couldn't get for certain set pieces but never found it again? Here we go, simple and easy to understand:
#Advanced Attributes Restrictions Sheet
cunning sigil
Strength:
Agility
Intelect
link: https://docs.google.com/spreadsheets/d/1Y873ETlGHI5uyZSuqyx4Lh6f7TQBGjAcVPNl7c9V0Yo/edit?gid=2053537341#gid=2053537341
(purple stats recommendations from Maxroll, I don't have this knowledge).