Great Ahamkara Hunt
From Destiny 1 Wiki
The Great Ahamkara Hunt was a campaign by the Guardians of the City to exterminate the Ahamkara. Mysterious creatures brought into existence by the Traveler during the Golden Age, the Ahamkara were frequently sought out by Guardians for their wish-granting powers. These wishes would always backfire, however, and cause far more harm than good. As valuable as the Ahamkara were, the Vanguard deemed them too dangerous to allow to live. Officially, the Hunt was successful and the Ahamkara species was rendered extinct. Ahamkara bones are used in some Warlock and Hunter armor.