Codex Umbra

The Codex Umbra is a book on dark magics that Maxwell starts the game with. When used it damages health and spawns a shadow puppet clone of himself. For each puppet active, Maxwell's maximum sanity is reduced, similar to how Meat Effigies reduce maximum health. A maximum of 5 puppets can be active at one time.

While puppets are active they will aid Maxwell in combat as well as aiding in a number of tasks such as cutting trees. Unlike other followers, mobs do not react to the presence of the puppets, allowing them to approach creatures that would normally run from the player.