The Heart of Fear

Steps

 * 1) Collect four Clay golem hearts from the Clay golems inside of the zone.   This can be done at any time prior to entering the Sanctum of Fear.    They are chest drops so I suggest doing this first; it should only require killing four golems.
 * 2) Collect three spears from Tae ew hunters in the Temple of Cazic-Thule.
 * 3) Collect five runed swords from Tae ew defenders.
 * 4) Collect five maces from Tae ew warders.
 * 5) Find three auto-updating items inside the Temple of Cazic-Thule.   Kill any mob for the update.
 * 6) *Sliver of Thulzite
 * 7) *Shard of Thulzite
 * 8) *Piece of Thulzite
 * 9) Return to Nemar Gadgetglow.
 * 10) Slay the Acidic Mass, which is located on the center temple.   Head to the top and down the back side and the oozes are there.    If none are up, wait or come back later - the spawn time is very long.    Killing them starts a ring event which you must defeat.
 * 11) Receive a Broken Key, and take this to Nemar.
 * 12) Speak to Ux Uval (-2, -13, -76).
 * 13) Find the Dread Pool.
 * 14) Return to Ux Uval.
 * 15) Enter the Sanctum of Fear
 * 16) Make your way up the passage to the top room.   Clear anything that's aggro.
 * 17) There will be four idols around the center altar.   Place a Clay golem heart in each one.
 * 18) *After placing any heart, two Ancient thulian terrorfiends will spawn; kill them if they are aggro.
 * 19) *After all four hearts are placed, Fright will spawn on top of the central altar, along with four friends.   Each is a single encounter, so kill the friends if they are aggro.
 * 20) Kill Fright to complete the quest.

Rewards
Used to grant access to the Sanctum of Fear.
 * At least
 * One of the following:
 * Blood Fire
 * Bone Razor
 * Monsoon, Sword of the Swiftwind
 * Staff of Undead Legions
 * Withered Totem of Widdershins