Forgotten Knowledge Quest/Spoiler

Required Equipment

 * 5 Heavy Old Tomes
 * 50 Pelvis Bones
 * 50 Marsh Stalker Feathers
 * 50 Fish
 * 50 Acorns
 * 50 Incantation Notes
 * A team of up to 5 players to kill the bosses
 * The New Frontier Quest completed (up to some mission which allows you to enter Zao)
 * The Ice Islands Quest completed (up to the mission which allows you to enter the Formorgar Mines)
 * 1 Phial of Fresh Water
 * 1 Reinvigorating Seeds

Method
Walk to the Halls of Hope north of Thais, here.

Initially you will find an unfinished temple, which must be finished by giving enough Heavy Old Tomes to Albinius. These tomes are gotten from the Brass-Shod Chests, one can be found in the basement of the tower next to mount sternum (☀ here ), in a house outside undead cave (☀ here ), in the Valkyrie shack north of Thais (☀ here ), heading to orcs area in the Ancient Temple (☀ here ), and under White flower temple (☀ here ).

They can also be looted from certain creatures such cyclops and different kind of orcs. Just hand them to Albinus by saying "temple" and "yes". He will take all the tomes you have in your backpack. After giving 5 tomes you have given enough to be able to use the Imbuing Shrine (note that you will only unlock the first two imbuing levels, as third is unlocked after finishing the quest).

When the temple is finished, the temple will contain six portals leading to six locations with eventually a boss monster to fight. These bosses must be killed to unlock the strongest Imbuing level. Furthermore these bosses drop pieces of an item with which you can tame a Stone Rhino (Mount). A character may only enter each boss room once every 20 hours.

Bane of the Cosmic Force
Talk to Albinius and say "energy portal". He will ask for 50 Marsh Stalker Feathers. Give them to him and enter the Energy Portal to appear in the Replica Dungeon, here, initially filled with Iron Servants.

When you pull the left lever here a message will appear:

Similarly when you pull the right lever here a message will appear:

The Iron Servants are replaced by golden and diamond ones. You need to kill at least 5 Golden Servant Replicas and 5 Diamond Servant Replicas within 10 minutes. This will cause a lava flow and a water flow to through the system, which if you follow leads to the center of the dungeon, here, where an Energy Gate will appear. Enter it and you will appear here in a room with 5 Stone Tiles and a lever. Stand on the tiles with your team of 1-5 players and pull the lever, to be teleported to the boos room, here.

In the boss room you will face the boss Lloyd and four immobile cosmic energy prisms: Cosmic Energy Prism A, Cosmic Energy Prism B, Cosmic Energy Prism C and Cosmic Energy Prism D. After you kill Lloyd a message will appear:

At this moment you can kill one of the four cosmic energy prisms. Then Lloyd will re-appear and you will have to kill him again, after you can kill another cosmic energy prism. You will have to repeat this process until all 4 cosmic energy prisms are slain, then Lloyd can be killed for good. Please note that there is a time limit (15 minutes?) on the boss fight, after you will be kicked from the room.

Circle of the Black Sphinx
Talk to Albinius and say "death portal". He will ask for 50 Pelvis Bones. Give them to him and enter the portal. When you enter the Death Portal you will find yourself in the Old Masonry located here, filled with Necromancers, Renegade Knights and Vicious Squires on the upper floors, and Astral Shapers on the lower floors.

Walk south-east and go down here. In a parchment called The Ghostsilver Lantern (Book) you will read the story about Zegrath and his Ghostsilver Lantern. Walk north-east here and go down. Walk east and go up here. Use the spider web (actually the floor before it) in the north-west corner of the room and you will receive a Ghostsilver Lantern. Walk north-east and enter a room through a Door (Iron Bars), a message will appear:

In the middle of the room you will find an Old Desk. Use it and a message appears:

.

You will receive an Old Note.

Walk south-east and use a Heap of Rubbish, here and you will receive a  Painting of a Girl with the message:

Take the picture back to the room with the Old Desk and use it with the old desk. A message will appear:

.

Use the old desk again, you will receive an Old Silver Key with the message:

.

Walk east past the wall here and a message appears (if you do have the key):

Use the wall and you will appear here. Walk though the teleporter to the pre-boss room here. Gather a team of 1-5 players, stand on the tiles and pull the lever to face the boss Lady Tenebris with her Shadow Tentacles.

Dragon in Distress
Talk to Albinius and say "ice portal". He will ask for 50 Fish. Give them to him and enter the portal. Go through the Ice Portal or walk to the Formorgar Mines and find the NPC A Dragon Mother. Talk to her saying: hi, assistance, yes. She will ask you to retrieve her stolen egg.

Then, walk here and follow the path down until you reach a room with a lever. Stand on the squares and pull the lever to enter the boss room. Ignore the Solid Frozen Horrors and Frozen Minions, but instead focus on the Dragon Egg in the room with low HP. Use (only) fire attacks on it to heal it. Once it's fully healed, an orange message appears announcing that the boss is now vulnerable. Quickly start attacking the boss. After 30 seconds or so, the boss becomes immune to all attacks, at which point you have to heal the Dragon Egg again. When you'll eventually defeat the boss, a Baby Dragon (Creature) is born. Report back to A Dragon Mother.

The Desecrated Glade
Talk to Albinius and say "death portal". He will ask for 50 Acorns. Give them to him and enter the portal. Go through the Earth Portal or walk to the Outlaw Camp and find NPC Weakened Forest Fury. Talk to her saying: hi, distress, yes. She will give you an Empty Birdcage.

Walk into the Stony Pond next to her and you will appear in the Desecrated Glade, here. In this cave you will face: Cave Parrots, Orclops Ravagers and Orclops Doomhaulers.

When you use the Empty Birdcage on a Cave Parrot it will be caught and turn into an Occupied Birdcage while a message appears:

Walk some levels down until you see a Giant Tree located here. Use the Occupied Birdcage and the bird will fly away with Hearts Effect and a message will appear:

Repeat this process until you freed 3 parrots. Furthermore, try to loot some Reinvigorating Seeds (you only need one of these) from Orclops Ravagers. They need to be used on the Fertile Soil with the message:

This will make a Growing Birch appear. To water the birch you need one Phial of Fresh Water, which can be obtained by using the Stony Pond near the Weakened Forest Fury with the message:

When you use it on the Growing Birch it will say:

The Growing Birch will grow into a Blooming Birch, you need to grow 5 birches.

Now you can "heal" the giant tree located here, by using the Phial of Fresh Water on it.

Enter the Mystic Flame which appeared in front of you and you will appear in a Tree Wall cave deep below Tiquanda, here. Walk north-west until you find a teleporter, here. Enter it to appear in a room with 5 Stone Tiles and a Lever. Stand on the stone tiles with a team of 1-5 players and pull the lever, to be teleported in the boss room a little to the west, which contains an Abandoned Imbuing Shrine in the west.

When you enter the room ~6 Possessed Trees will spawn, together with the Mounted Thorn Knight. There are also up to 4? Thorn Minions.

Avoid killing the possessed trees or letting the mounted thorn knight kill them. When a Possessed Tree is killed an Unbound Blightwalker or other unbound undead will appear with the following message:

The Unwary Mage
Go to Ivalisse located in the Halls of Hope, here. Talk to Ivalisse, say temple, father, yes, yes and she will give you the mission to find her father who was looking for Draken in Zao.

The area Ivalisse talks about is located behind the Fire Portal, which brings you to northern Zao here. East of the building you can go up with a ladder, walk north over a Bridge and enter the Temple Complex (Dark Cave Entrance) here. Walk south past some Mutated Bats and Mutated Tigers and go west through a Lizard area where you face all kinds of High Class Lizards. Walk until you can go down one floor and walk north-east. Eventually you will find a room with A Strange Chalice, here. This is of course a disguised Silus, the father of Ivalisse.

Talk to him saying "hi", "chalice", "daughter", "story", "disguised", "thirsty", "learned". From him you will learn the password to enter the teleporter in the Temple Complex is "zzubaran".

You can now enter the teleporter located here, which brings you one floor down, here where you will face Draken Warmasters and Draken Spellweavers.

Walk south to a teleporter located here, which brings you to a room a little to the west, here. There you will find several Stone Tiles and a Lever.

Gather between 1 and 5 people so you can kill the Soul Of Dragonking Zyrtarch. If a group enters the room you can't enter it. If you exit the boss room during the fight you can't enter it right away again.

In the room you will find 4 Soulcatchers and (an immortal) Dragonking Zyrtarch. In the north of the room there is an Abandoned Imbuing Shrine. After some time Weak Souleaters will spawn, which you have to stack to create a teleporter to a different room with the now mortal Soul Of Dragonking Zyrtarch.

Time is a Window
Talk to Albinius and say "holy portal". He will ask for 50 Incantation Notes. Give them to him and enter the portal. Entering the Holy Portal takes you to the Astral Shaper Dungeon, deep below Tiquanda. You will enter the dungeon here. Walk east, while you encounter Twisted Shapers and Broken Shapers, and enter a Time Machine located here, which teleports you here with a message:

This floor contains no creatures, but a teleporter to the north, here. Enter it and you will appear here, in a room with a sign saying "Room of Cleansing", an Old Machine. Use the old machine to receive an Imbuing Crystal.

Go through the western teleporter, which takes you here, a room with 5 tiles and a lever, where you can try to face The Time Guardian with 1-5 people.

The Time Guardian will appear with several Time Keepers.

Final boss fight
After you killed all six bosses from the colored portals, you can enter the Energy Gate in the Halls of Hope. You will end up in the Astral Shaper Boss Dungeon located here.

You will meet various Astral Shapers. Walk south and go down the hole here. Walk north-west and go down some stairs here. Walk east until you find some Stone Rhinos and a Mystic Flame, here.

Enter the teleporter and you fill travel to a room located here. Walk in the teleporter to get in a room with 15 Stone Tiles and a lever. Get your team of 1-15 people on the tiles and pull the lever to enter the boss room.

The boss room contains four green vortices in its corners leading to smaller side rooms and one teleporter in the south-east which brings you back out of the boss room. In the west of the room there is an Abandoned Imbuing Shrine.

Entering the room a message will appear:

You will face: A Shielded Astral Glyph, The Astral Source and a lot of Animated Swords. The shielded astral glyph and the astral source are initially immune to all attacks. In the side rooms you have a Bound Astral Power, which can be killed. If you kill one you will see the message:

You have to prevent the glyph from being shielded again, if this happens, the following message appears: