About Mystic Moon: Secrets of Alchemy, from BoardGameGeek:
*pssssst* Come a little closer!
The Elder Witch has deemed you worthy of an invitation to her secret workshop! Open the doors to a whole new level of magic with the Secrets of Alchemy Expansion (built into the Mystic Moon Deluxe Edition) ?? Learn valuable tricks of the trade that teach you how to convert regular ingredients into materials guaranteed to shine like stars! (And if you produce a little bit of sludge as a byproduct, it probably couldn't hurt anyone, right? ?)
With the Secrets of Alchemy Expansion, you'll be able to use Alchemy to convert Ingredients into new materials such as Gold and Crystals. When you visit the Elder Witch's Shop, you will encounter Alchemy cards, each of which displays a Formula and Products.
You may perform Alchemy while visiting the Elder Witch's Shop by discarding the required Ingredients indicated in the Formula of the top card of the Alchemy deck, then collecting the Products listed on the card. You'll add Gold and Crystals you collect to your play area, and you'll immediately place Sludge you collect in the Garden.
When you perform Alchemy, you will also acquire the Alchemy card you used for later use. Place it next to your Potion Book, below your Witch's Hut. You may only have one Alchemy card in your play area at a time, and if you acquire a second one, you must return one of them to the bottom of the Alchemy deck. If you have an Alchemy card in your play area when you visit the Elder Witch's Shop, you may choose to either perform Alchemy using the top card of the Alchemy deck or the Alchemy card in your play area.
-description from the publisher
