Lord of the Grey is the map boss of the Belfry Map, and is similar to Kitava, the Insatiable in Act 5.
- Players must first click the Cradle of Purity to start the encounter, similar to the fight with Kitava in Act 5.
- The boss will disappear behind the Arena at 50% and 25% health, and The Lord's Heart will appear.
- Players must kill the heart and then the boss will reappear and the battle continues.
- When the boss reaches 0% health he will disappear and the battle ends