From Destinypedia, the Destiny wiki
Blood of Oryx
Court of Oryx
Wall of Darkness High Durability Rapid Movement Berserk Mode Summon Hive Guard Cleaver
Hagrist, Blade's Edge is a unique Hive Knight encountered in the Court of Oryx on the Dreadnaught. He must be killed so that Guardians may use his sword to damage Thalnok.