History of Solar Orb

Solar Orbs are pickups in the second encounter of Warlord's Ruin, the Locus of Wailing Grief. Each Taken totem that is cleansed spawns a Solar Orb near the Rally Flag.

Use

Carry the orbs to the unlit pillars near the centre of the courtyard. Lighting four pillars starts the damage phase. Each lit pillar is a damage zone lasting 15 seconds, so stay near a lit pillar to damage the boss, then move to another when the light goes out. When all pillars go out, the encounter resets and repeats until the boss dies.

The guide suggests waiting until five of the six Blighted Eyes are down before cleansing totems.