Events are another great source of Black Curse Powder, as Epic Catalysts can often be exchanged for event currency or claimed as Login Event or Giveaway Event rewards. The Guild Member Shop will also allow you to purchase lots of Catalysts in general, which include Black Curse Powder and other Epic Catalysts.
Method #1: Farm Adventure Stage 10-S2. Black-Tail Spire (Best Method)
Farming Stage 10-S2. Black-Tail Spire will allow you to get the most Black Curse Powders out of all the sources listed here. This is because not only are Black Curse Powders featured as drops in this area, but they can also be purchased in the AP Exchange Shop. One Black Curse Powder costs 400 AP to buy, and you can only buy them up to 5 times per week. Buy only what you need, and make sure to equip pets that increase your AP acquisition rate whenever you farm this Adventure stage to maximize your gains.
Method #2: Participate In Events
Events will always be a great source of both Epic Catalysts and Rare Catalysts. If you want to farm lots of Black Curse Powders in addition to the ones you get from farming Adventure Stages, I suggest you participate in Events often. This is quite easy to do, as there is always at least one Login, Giveaway, or Story Event running at any given time in Epic Seven.
Method #3: Visit Your Guild
One of the best things you can do as a Guild member is to always visit the Member Shop and purchase items from there. If you want some Black Curse Powders, you’d want to specifically buy out Epic Catalyst Chests and Catalyst Chests, as these are the ones that give you Epic Catalysts. You can easily buy all the chests you need every week by participating in activities and donating every day. Never forget about your duties as a Guild member!