Zulmak, Instrument of Torment

Zulmak, Instrument of Torment is the final boss of the Pit of Heresy dungeon, added in Shadowkeep. He is a Hive Knight who once competed for the Osmium Throne, and the Daughters of Crota reanimated him as a Hive-Nightmare hybrid to serve as their champion.

The fight is split into phases. Players kill the Accursed Swordbearers and Disciples of the Broken Blade to collect Void Orbs and deposit them at three extinguish stations, which lets players on the plate damage him. Every 30 seconds the plate radiates heat, and anyone left on it is killed by a fire blast.