Reactor, Reclaimer and Reducer
Halls of Fabrication
Three factotums fought as one encounter, the fourth in the Halls of Fabrication.
Popular builds
The builds groups run most often at this boss, one per role. Ranked by how often each is run, not by damage done.
Most popular Tank build
Sorcerer tank with Pearlescent Ward
seen 4×
Skills
Perfected Xoryn's Masterpiece7 
Perfected Pearlescent Ward5 
Magma Incarnate1 
Cryptcanon Vestments1 Most popular Healer build
Arcanist healer
seen 11×
Skills
Master Architect5 Powerful Assault5 
Ozezan the Inferno2 
Perfected Grand Rejuvenation2 Most popular DPS build
Necromancer DPS
seen 43×
Skills
Corpseburster5 
Perfected Slivers of the Null Arca5 
Perfected Merciless Charge2 
Slimecraw1 
Velothi Ur-Mage's Amulet1 Most popular Support build
Z'enkosh DragonKnight
seen 20×
Skills
Roar of Alkosh5 
Z'en's Redress5 Perfected Merciless Charge2 Slimecraw1 Velothi Ur-Mage's Amulet1
Ranked by how often a build is run, from the top 100 boss-DPS parses per boss. U50 data, as of 4 Aug 2026.