The Forge can be used to create 11 different weapons. In order to do so, players must first complete Lost Prophecies, which are acquired from Brother Vance. Upon completion of a Lost Prophecy, players must simply walk up to The Forge and craft the weapon.
- In order to gain access to Lost Prophecies and the Forge itself, players must first complete a Heroic Adventure on Mercury. This requires completion of the main Curse of Osiris Campaign and the three basic Adventures.
Right next to The Forge, there is a wall with eleven symbols on it. When a player crafts a weapon through The Forge, the corresponding symbol for that weapon will light up on the wall. This allows players to track how many of the available weapons they have forged.