Bronze key crimson is a key and reward from the Shades of Mort'ton minigame. To obtain it, the player must kill either a loar shade or a phrin shade and then burn its remains on a pyre. This is the best key reward which a loar shade will generate, and can be an occasional reward from giving an afflicted a dose of serum 207 or serum 208. The key may be used to enter the Shade Catacombs and then open the correctly coloured chest. It will open a bronze-framed chest with a crimson lock, but can only be used to open bronze doors within the tomb.