OVERVIEW
About Rotting Marsh Key
Opens the final boss gate in Rotting Marsh. The key is spent when you win.
Base attributes
Act2
Boss key
Opens the final boss gate in Rotting Marsh. The key is spent when you win.
The stage before an act boss awards the first key. Further keys can drop while farming.
See Rotting Marsh, Swamp Hydra and boss gates.
