Song Killer

Song Killer is a Rune Weapon that originally belong to Ivy Huntington, presumably forged by her father Alistair Huntington when she served as his apprentice. Upon her death Alistair took possession of it and after several centuries gifted it to his new apprentice and Ivy's direct descendant Isabelle Arrington. 
Song Killer is a Rune Weapon of of great magical power that seems to have a design similar to a duel bladed Konda. It is in fact two Konda like swords joined at the hilt that allows it to be wielded as a single double blade or as two single blades duel wielded at the users leisure. Forged with powerful enchantments and combat magic Song Killer is an extremely powerful weapon. Unlike mass produced modern Rune Weapons song killer is centuries old and has a quality unrivaled by most others. Like all rune weapons it can greatly enhance and channels the wielders magic and become an extremely powerful weapon on the battle field. One draw back of its use however is its tremendous weight. Its been described to weight roughly half a ton or 256kg/1128.77lbs. As such only a Sapphire Blooded can wield it effectively by using telekinesis to lift it's great weight with ease compared to other bloodlines. Its great power and weight combined are what make it so powerful a weapon used in combat. Song Killer has been show to be able to be thrown with great force, resist magics intended to stop it and shot several forms of arcane energy bolts. However without telekinesis to properly wield it the blade can be somewhat of a burden on its user based on a powerless Isabelle having great difficulty trying to use it without her magic. 
Song killer was presumably destroyed or left at the bottom of the ocean after the destruct of Fox Island but this is yet to be confirmed.