Use Alchemy to transmute your current Ore, Materials, and Double Rare cards into ones that you want.
Transmute unwanted Ore into the Ore you need. The conversion rate is 4:1.
Transmute unwanted Accessories into the Accessories you need. The conversion rate is 4:1.
Transmute a Double Rare card into another Double Rare card from the same Episode. This can only be done once per day. The transmutation rate is 1:1.
Simlar to the Exchange Office, only 5 transmutations are allowed per day.