The strange key loop is half of a mysterious key found inside of Movario's base during While Guthix Sleeps. The key halves are found upstairs (two spiral staircases) NOTE: You must first go down a set of stairs before reaching the spiral staircases. in a chest that looks like a bed. The second spiral staircase is revealed by searching the contraption in the northwest corner Movario's Study. When used on a Mithril dragon with the Strange key teeth, it will fuse to form the Dragonkin key, which is used to make the dragon platebody via the Dragon Forge. Players need to tag the dragon by attacking it once for this to work.
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