Rare Exchanger (Arshid's Den of Iniquity)

Rare Exchanger tells you, "Hello, and welcome! I offer the chance of a new rare gem, every time is a winner! If you'd like to get a pull from the bag of gems just hand me an MMD and then a rare gem. In return you will get a new rare gem or a grand casino key. All rare gems have the same chance of showing up."