I am playing a character who is about to have an ioun stone implanted, and part of the process involves fasting for between 3 and 8 days (min is 3, each extra adds a +1 to the charisma check at the end, max is +5). My character has a ring of sustenance and only eats or drinks socially, but does he count as fasting if he is wearing the ring for those 3 days? Along the same path, is it possible to implant a clear spindle ioun stone since it has the same "sustains the creature without food or water" that the ring of sustenance does?
