Fiyr remains are an item found and used in the Shades of Mort'tonminigame. To obtain these remains, the player must kill a Fiyr 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. However, players need a silver key from an Asyn shade, to actually reach fiyr shades. They may also be encountered while Temple Trekking on hard route. To burn the Fiyr remains(see table for more info) first place the pyre logs on a funeral pyre, followed by the Fiyr remains, then ignite the pyre with a tinderbox. This will grant the player Firemaking experience (see table), and 100 Prayer experience (150 with Morytania legs 3).
Fiyr remains will always reward the player with either a silver or gold shade key, or some coins. Silver and gold keys give unrestricted access to all areas of the shade tombs, and the silver keys open the silver rewards chests in the Fiyr area of the tombs, which give the best common rewards out of all the chests. Gold chests can only be opened by gold keys, but may offer some specific loot otherwise unobtainable.
Players may only use Magic pyre logs or better to burn Fiyr remains.