Planar Conflux

Relic weapons from the Caught in the Web raid can be upgraded to have Planar Conflux property. This allows any weapon from the raid to form a part of any of the below Planar Focus Item Sets.
 * Planar Focus: Erudition (with Planar Focus of Erudition trinket)
 * Set Bonus:, , +15 Psionic Bonus to Universal Spell Power
 * Planar Focus: Prowess (with Planar Focus of Prowess)
 * Set Bonus: +4 to attack and damage, +15 Physical Resistance Rating (all artifact bonus)
 * Planar Focus: Subterfuge (with Planar Focus of Subterfuge)
 * Set Bonus:, True Seeing, Dodge bonus 3%

The upgrades are performed by acquiring 3 Commendation of Heroism and 375 Purple Dragon Knights favor and speaking to Mikrom Sum, the Purple Dragon Knights favor vendor in Eveningstar.

Further upgrades are accessible at the same vendor, but you only need the first one to access your Planar Conflux set bonus.