Phrin remains are an item found and used in the Shades of Mort'tonminigame. To obtain these remains, the player must kill a Phrin shade, located in the underground tomb. (Note:To enter the tomb, the player needs at least a bronze shade key, obtainable by killing and cremating a Loar shade.) To burn the Phrin remains, the player needs some pyre logs (see table for more info) and a tinderbox. First place the pyre logs on a funeral pyre, followed by the Phrin remains, then ignite the pyre. This will grant the player Firemaking experience (see table), and 46.5 Prayer experience.
Once burned a bronze or steel shade key, or some coins, will appear next to the pyre. The keys can be used to either enter the tomb, or open the corresponding coloured doors to chests containing valuable items.