Question: destiny 2 how to get the black armory key mold?
Answer: Visit Ada-1 to receive the Black Armory Key Mold, the final key needed to unlock the Mysterious Box.
Farm the Engine room to easy get all 24 Watcher Lens.
Complete the new Bergusia forge, remembering to kill the two drones to make it Maximum Temper, to get the Black Armory Key.