You need to be a level 80 or higher Warlock to start this quest.
You will need the ability to enter the library inside Nektropos Castle (either by yourself or with the help of someone). See The Boar's Head and The Red Marble.
(Optional) Enough gathering skill to harvest tier 8 roots/bushes: Minimum 340 gathering skill without the use of skill-increasing equipment. This requirement can be avoided by buying the required items.
Ability to get through the green gate (a Bathezid gate crystal or can be bypassed with the Sokokar post), blue gate (a Nak'azar gate crystal), and red gate (a Caroeth gate crystal) inside Chardok, either by having them yourself or someone in or outside the group opening the gates. Various call and transportation spells works too.
Find more about Everling Village by locating the Journal of Samantha Rageshree in the library of Nektropos Castle ( -19, 14, 52 ) /waypoint -19, 14, 52. This appears as a glowing book on the center shelves.
Continue to talk to Abelard Raleigh. He will refuse to give up Dalmat's tome and attack as a level 80^.
Attempt to kill Abelard Raleigh to take the tome by force. If he disappears after you kill him and you haven't gotten the update wait for him to re spawn and kill him again until you get the update.
Collect 6 Mantrap roots. These can be bought or harvested and come from either root or shrub nodes.
Collect 10 pieces of smoldering material. These also can now be bought or harvested and come from any T8 node.
NOTE: You can save a lot of money on these steps by buying ONE mantrap root or smoldering material, putting it on your broker, and taking it back out until you have all of the updates.(for bronze/silver player on the EQX server, you can just put them in to your guild storage box and remove them to get the update, as well.)
Tahd Feek will be able to make the poison with these ingredients.
Examine the gravestone, look closer, and pour the bottle down the cylinder hole. You'll receive another journal page and an idol.
Find out more about Kyrtoxxulous and the idol:
Head to South Qeynos mage tower, and go through the red portal. Down the stairs, turn right and around, then there will be a glowing book behind one of the pillars on the left hand side, ( 707, 42, 104 ) /waypoint 707, 42, 104. Take it.
Examine the book and read the passage.
Examine the shrine built to honor Kyrtoxxulous in the ravine in the Fens of Nathsar, near the Eastern Pens sokokar post ( -1687, -401, 1103 ) /waypoint -1687, -401, 1103,
Acquire the Idol of Sakpat'azif by looting it from the corpse of Xalgoz ( -140, -90, -4 ) /waypoint -140, -90, -4 or the nearby Mistmoore Emissary in the basement of Karnor's Castle.
Speak to a scorned reet slave behind the Myconid Spore King in Lower Sebilis ( -57, -110, 287 ) /waypoint -57, -110, 287. He will tell you the Idol was taken from him.
Kill Taskmaster Kulrak in the Sebilis Slave Quarters ( -243, -25, 423 ) /waypoint -243, -25, 423. Everybody who needs the idol in the group gets it (body drop). Placeholder is "a foreman" with about roughly 10-20 minutes respawn. The placeholder will not give an update.
Kill either the Queen Velazul Dizok or her placeholder, "a Gorowyn royal delegate", deep in Chardok palace area ( 1313, -67, 228 ) /waypoint 1313, -67, 228 and loot the Idol from the chest she drops. Everybody who needs it in the group gets the idol. (To get the Queen to spawn, all 4 of her kneeling guards that surround the throne must be killed. Once done the queen will spawn within 30 minutes.)
Note: I killed everything in the room she spawns in, was standing on her throne for 1 min.
Complete the ritual started by the reet slaves.
Place the idols around the makeshift shrine down in the ravine in eastern Fens of Nathsar ( -1687, -401, 1103 ) /waypoint -1687, -401, 1103 and be ready for a fight.
The spirit of Gherzhas (level 86^^^) will spawn and attack once you place the idols. Kill him to receive your quest reward.