Hook, Line, and... Anchor?

Starting the Quest

 * Examine the Earring of Void Channeling (can be any zone)

Steps

 * 1) Enter the Munzok's Material Bastion

Rewards

 * Amulet of Void Channeling
 * Mark of Void Channeling
 * Signet of Void Channeling
 * Talisman of Void Channeling