Royal Challenges are the ways that dragons decide who the next queen of the tribe will be, involving a challenge from a sister, daughter, niece or granddaughter, then a fight to the death between the current queen and the challenger. Only three royal Challenges have been witnessed in the series, in Escaping Peril, where Tourmaline/Ruby challenged Queen Scarlet for the Throne officially, in The Hidden Kingdom, where Glory challenges the current RainWing Queens, and in Darkness of Dragons, when Onyx challenged Queen Thorn for the throne. It was also mentioned in The Lost Heir that Orca challenged Queen Coral, but was unsuccessful. At least in two of the tribes, challenges appear to be a public event, allowing other dragons to spectate the match while the challenger fights the queen for the t