Hexahedron

The Hexahedron is the second encounter of the Prophecy dungeon, a rotating cube arena. Each side of the room has a plate, and the Toland orb floats above one pillar at a time. Players start on the plate under the orb, which spawns Taken Hobgoblins and Knights, then cleanse the pillar under the orb and ride the lift on the middle plate to advance. Each cleanse turns the room in the direction cleansed. Sometimes the orb sits on the ceiling plate, which adds two cycles and a few extra minutes.

The cycle repeats six times. Clear Hobgoblins first, then the Acolytes, which spawn Eye turrets if left alone, so area-of-effect weapons work well against them. After the sixth cleanse, two Centurion Echos spawn. They are weak and die quickly, and once both are defeated, loot drops and you can move on to the next traversal area. Special weapons handle the Centurions well, and high-damage loadouts or a Well of Radiance are both viable for the room.