Cool, thanks all. I burn my rings in the cube as mentioned above.... but the post I read made it sound like once you extracted a Puzzle Ring, it could be used over and over again. I didn't think we'd ever get that lucky... but I wanted to make sure.Thanks again for the replies and the clarification!

I read an offhand comment on a post a while back that if you cube a Puzzle Ring, you can effectively run endless Vaults. Is this even possible? If so, how?