Echo of Oryx
From Destiny 1 Wiki
An Echo of Oryx is a shadowy projection of Oryx, the Taken King created by the power of the Darkness. Using an Echo allows Oryx to enact his will remotely from the confines of his Dreadnaught; Oryx can summon and command Taken troops via the Echo and wield some of his other powers. Once the Echo is vanquished, however, Oryx's power in an area fades and any Taken he summoned are recalled. The Echo is encountered multiple times in the main story; to liberate Earth, Venus and Mars from the Taken Blights, the player must defeat the Echo on each world. A more powerful variant of the Echo of Oryx known as the Shade of Oryx is encountered in the King's Fall Raid.
