Danut's Self-Found Gems Challenge [streamlined for Betrayal!]

BETRAYAL LEAGUE UPDATE

I've updated the challenge in preparation for Betrayal. The old ruleset was way too complicated, so the main focus has been on streamlining that part. Two optional rules have also been added to bring more longevity to the challenge.

I hope everyone has fun with Betrayal, and maybe I'll see some people giving this a run.