Archcustodian
Halls of Fabrication
An oversized Dwarven Spider, and the third boss of 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
DragonKnight tank with Pearlescent Ward
seen 5×
Skills
Perfected Pearlescent Ward5 
Xoryn's Masterpiece5 
Baron Zaudrus2 Perfected Xoryn's Masterpiece2 Most popular Healer build
Arcanist healer
seen 11×
Skills
Powerful Assault5 
Master Architect5 
Ozezan the Inferno2 
Perfected Grand Rejuvenation2 Most popular DPS build
Necromancer DPS
seen 46×
Skills
Corpseburster6 
Perfected Slivers of the Null Arca5 
Perfected Merciless Charge2 
Huntsman's Warmask1 Most popular Support build
Z'enkosh DragonKnight
seen 22×
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.