Nocturna

Nocturna is the legendary blade forged by Keladonus of House Nocturne to control the mind of Brosca in The Dark Province. Upon Brosca's departure from the World's Stem, she sought an audience with Keladonus, her sympathy for the cobalt dragons now fully surfaced. Keladonus welcomed Brosca into her fold and gave her Nocturna, which slowly possessed her mind. Brosca later used the blade to murder Puck and injure Sylviae during the Razing of Cendriane before the palace tower they were in collapsed. Brosca was presumed dead at the scene, though no body was found.