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The Great Gubal Library

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The Great Gubal Library

The Great Gubal Library.png
59 (Sync: 60)
120 (Sync: 150)
Party size
Light Party
4man 1 Tank role.png 1 Healer role.png 2 DPS role.png
Time limit
Req. quest
Main Scenario quest Forbidden Knowledge
The Dravanian Hinterlands (X:28, Y:37)

Built by the learned men and women of Sharlayan, the Great Gubal Library is the grandest repository of knowledge in all of Eorzea. Lining its towering shelves are tomes beyond count, gathered from the farthest reaches of the realm. Like the city-state, however, the library was abandoned by its caretakers when they fled to their motherland in the face of Garlean invasion. And now, fifteen years since its doors were sealed, you will be the first soul to set foot within its halls. Your destination is the forbidden section deep within the library, where lies your objective: the fruits of Matoya's research on the aetheric converger.

— In-game description

The Great Gubal Library is a level 59 dungeon introduced in patch 3.0 with Heavensward.


Level 59+ players need to start the level 59 Main Scenario Quest Main Scenario QuestForbidden Knowledge. Players can start the quest by talking to Matoya in Matoya's Cave (x6, y5). To unlock the quest, players need to complete the level 59 Main Scenario Quest Main Scenario QuestMatoya's Cave (Quest).


  1. Defeat the demon tome
  2. Defeat Byblos
  3. Defeat the Everliving Bibliotaph


The Great Gubal Library Guide
The Great Gubal Library Guide

Aggressive difficulty r6.png The Demon Tome

The Demon Tome is similar to the Demon Wall in Amdapor Keep, with a few added skills, but doesn't advance.

  • Like the Demon Wall, the Demon Tome will cast an AOE down the middle of the room, then the sides. If this hits you, it will have a slowing effect, making it harder to get past him for Disclosure.
  • As he is between casting the two previous attacks, the Demon Tome will also cast Dark Blizzard III, a circle AOE that will target a random player.
  • The Demon Tome will occasionally cast Disclosure and "begin to glow." This signals that you need to run along the sides of the arena to the backs-side of the Tome. Anyone on the wrong side of it when it closes will be killed instantly.
  • The Demon Tome will cast Words of Winter after a while, an attack similar to Shiva's ground freeze - when the ground is frozen, you will move a certain length in the direction you attempt to go. Unlike Shiva, this is not all the way to the edge of the arena; it is a matter of several yalms. At that point it will always be active when it casts Disclosure.

Take note that the fence is not present to the immediate left and right of the book, but you cannot fall off the ledge despite this. The easiest way to get past him when frozen, for PC players, is to press Q or E while directly facing the boss (assuming you haven't remapped those keys) so that you slide into the fence, then W twice so that you slide forward and past him. Alternately, holding right-click and pressing A or D will accomplish the same thing. While I haven't attempted the boss with a controller on PC, just tapping left or right once, and then forward twice, 'should' get the job done as well.

Aggressive difficulty r6.png Byblos

Byblos is a book demon, and the second boss of The Great Gubal Library.

  • At intervals, Byblos will run to the center of the book that summoned him and become invincible. Shortly after, two books will spawn with adds in them. They will fire Death Ray, a low damage line AoE that extends pretty far. Kill the adds quickly. When they die, they will draw a tether between them and a given player (like the ice, fire, and lightning orbs in the Scylla encounter in Labyrinth of the Ancients). Draw this orb into Byblos to break his invulnerability.
  • After one invulnerability phase, Byblos will begin spawning clouds of oil fumes around the room. These will cause 2k damage and a pushback when you run through them, so take them in turns, carefully, to keep them from stacking up. The clouds will break the orbs from the invulnerability phase if they collide, requiring your party to deal with another set of adds.
  • Performs Gale Cut fairly regularly, a frontal attack that deals mild damage to tanks. This has no ground warning, and can be avoided by either running through or to the side. It has a cast time of around 2.5-3 seconds.
  • Performs Tail Swipe when someone is behind him, a rear-facing conal attack. This seems to only happen if someone is behind him.
  • Performs Head Down on a random party member, which is a fairly damaging charge attack/sort-of stun. This cannot be avoided regardless of any attempt to move away from it and it will hit all party members in its path. If he targets you, try not to line yourself up with your party, or run forward to minimize the area he will affect.

Aggressive difficulty r6.png The Everliving Bibliotaph

The Everliving Bibliotaph has a few ground-pattern AOE attacks in addition to:

  • At 3 intervals throughout the fight (roughly 85%, 55%, and 25% HP), Bibliotaph will begin casting Void Summon. Platforms on the ground will light up, and they will need a certain number of players to stand on them in order to cancel their summon. When one light on the platform is lit up, only one player is needed to stand on it to cancel the summon. When two lights on the platform are lit, two players must stand on it. When three lights are lit, the platform needs three players. Before this fight, figure out who will go with who for the first two phases, and plan to run all together for the final (three-person) phase. If a platform's summon is not canceled, that platform will summon a voidsent add to the boss fight.

Note: All six platforms will light up the first time (for one player each), four will light the second time (two players each), and only two will light the third time (three players each). You seem to have around ten seconds to cancel all the summons (need confirmation) before the add is spawned.

  • At intervals, Bibliotaph will mark players with targets. If you are targeted, run to one side of the arena between platforms to bait the AOE he will place on you.
    • This sets down a purple void spark (a stationary ball) which will remain in place for a duration, periodically pulsing to inflict a stack of vulnerability on those in the area. Be sure to avoid this at all costs.
  • After the 2nd Void Summon at roughly 55% HP, he will begin casting Deep Darkness which covers the entire outside of the arena, immediately followed by Magic Burst (occasionally he will cast Magic Burst first), which covers the inside of the arena. Deep Darkness hits tanks for around 3k and causes a 25-30 second Heavy debuff. Magic Burst deals damage and a knockback.


Silver Coffer (small).png The Demon Tome

Name Type Rarity Quantity
 Sharlayan Conservator's Bangle Bracelets BDungeon 1
 Sharlayan Conservator's Boots Feet BDungeon 1
 Sharlayan Conservator's Ring Ring BDungeon 1
 Sharlayan Custodian's Bangle Bracelets BDungeon 1
 Sharlayan Custodian's Boots Feet BDungeon 1
 Sharlayan Custodian's Ring Ring BDungeon 1
 Sharlayan Emissary's Boots Feet BDungeon 1
 Sharlayan Pankratiast's Bangle Bracelets BDungeon 1
 Sharlayan Pankratiast's Boots Feet BDungeon 1
 Sharlayan Pankratiast's Ring Ring BDungeon 1
 Sharlayan Pathmaker's Boots Feet BDungeon 1
 Sharlayan Philosopher's Bangle Bracelets BDungeon 1
 Sharlayan Philosopher's Boots Feet BDungeon 1
 Sharlayan Philosopher's Ring Ring BDungeon 1
 Sharlayan Preceptor's Bangle Bracelets BDungeon 1
 Sharlayan Preceptor's Boots Feet BDungeon 1
 Sharlayan Preceptor's Ring Ring BDungeon 1

Silver Coffer (small).png Byblos

Name Type Rarity Quantity
 Sharlayan Conservator's Choker Necklace BDungeon 1
 Sharlayan Conservator's Earrings Earrings BDungeon 1
 Sharlayan Conservator's Gloves Hands BDungeon 1
 Sharlayan Conservator's Hat Head BDungeon 1
 Sharlayan Custodian's Choker Necklace BDungeon 1
 Sharlayan Custodian's Earrings Earrings BDungeon 1
 Sharlayan Custodian's Gloves Hands BDungeon 1
 Sharlayan Custodian's Helm Head BDungeon 1
 Sharlayan Emissary's Cap Head BDungeon 1
 Sharlayan Emissary's Gloves Hands BDungeon 1
 Sharlayan Pankratiast's Cap Head BDungeon 1
 Sharlayan Pankratiast's Choker Necklace BDungeon 1
 Sharlayan Pankratiast's Earrings Earrings BDungeon 1
 Sharlayan Pankratiast's Gloves Hands BDungeon 1
 Sharlayan Pathmaker's Gloves Hands BDungeon 1
 Sharlayan Pathmaker's Helm Head BDungeon 1
 Sharlayan Philosopher's Choker Necklace BDungeon 1
 Sharlayan Philosopher's Earrings Earrings BDungeon 1
 Sharlayan Philosopher's Gloves Hands BDungeon 1
 Sharlayan Philosopher's Hat Head BDungeon 1
 Sharlayan Preceptor's Choker Necklace BDungeon 1
 Sharlayan Preceptor's Earrings Earrings BDungeon 1
 Sharlayan Preceptor's Gloves Hands BDungeon 1
 Sharlayan Preceptor's Hat Head BDungeon 1

Gold Coffer (small).png The Everliving Bibliotaph

Name Type Rarity Quantity
 Belah'dian Anelace Sword BDungeon 1
 Belah'dian Cinquedea Daggers BDungeon 1
 Belah'dian Claymore Greatsword BDungeon 1
 Belah'dian Degen Rapier BDungeon 1
 Byblos Card   This item is guaranteed to drop. Triple Triad Card 1
 Ink Long Dry Orchestrion Roll   This item is guaranteed to drop. Orchestrion Roll ABasic 1
 Kagehide Katana BDungeon 1
 Lewphon's Eye Star Globe BDungeon 1
 Nymian Royal Marine Battleaxe Greataxe BDungeon 1
 Nymian Royal Marine Codex Book BDungeon 1
 Nymian Royal Marine Grimoire Book BDungeon 1
 Old World Composite Bow Bow BDungeon 1
 Old World Rod Staff BDungeon 1
 Page 63 Minion ABasic 1
 Pre-imperial Garlean Revolver Firearms BDungeon 1
 Sharlayan Conservator's Coat Body BDungeon 1
 Sharlayan Conservator's Longkilt Legs BDungeon 1
 Sharlayan Custodian's Coat Body BDungeon 1
 Sharlayan Custodian's Longkilt Legs BDungeon 1
 Sharlayan Emissary's Coat Body BDungeon 1
 Sharlayan Emissary's Longkilt Legs BDungeon 1
 Sharlayan Pankratiast's Coat Body BDungeon 1
 Sharlayan Pankratiast's Longkilt Legs BDungeon 1
 Sharlayan Pathmaker's Coat Body BDungeon 1
 Sharlayan Pathmaker's Longkilt Legs BDungeon 1
 Sharlayan Philosopher's Coat Body BDungeon 1
 Sharlayan Philosopher's Longkilt Legs BDungeon 1
 Sharlayan Preceptor's Coat Body BDungeon 1
 Sharlayan Preceptor's Longkilt Legs BDungeon 1
 Thavnairian Cane Cane BDungeon 1
 Thavnairian Katars Fist Weapon BDungeon 1
 Thavnairian Partisan Polearm BDungeon 1
 The Southern Sun Shield BDungeon 1

Additional Treasure Coffers

Bronze Coffer (small).png Treasure Coffer 1 (X: 13.2 Y: 10.7)

Any of the Demon Tome's loot, or one of the following:

Name Type Rarity Quantity
 Clear Prism Other ABasic 1
 Coral Pink Dye Other ABasic 1
 Blood Red Dye Other ABasic 1
 Celeste Green Dye Other ABasic 1
 Turquoise Green Dye Other ABasic 1

Bronze Coffer (small).png Treasure Coffer 2 (X: 12.2 Y: 12.7)

Any of the Byblos' loot, or one of the following:

Name Type Rarity Quantity
 Clear Prism Other ABasic 1
 Coral Pink Dye Other ABasic 1
 Blood Red Dye Other ABasic 1
 Celeste Green Dye Other ABasic 1
 Turquoise Green Dye Other ABasic 1

Bronze Coffer (small).png Treasure Coffer 3 (X: 16.2 Y: 10.8)

Name Type Rarity Quantity
 Clear Prism Other ABasic 1
 Coral Pink Dye Other ABasic 1
 Blood Red Dye Other ABasic 1
 Celeste Green Dye Other ABasic 1
 Turquoise Green Dye Other ABasic 1

Bronze Coffer (small).png Treasure Coffer 4 (X: 15.7 Y: 10.2)

Name Type Rarity Quantity
 Clear Prism Other ABasic 1
 Coral Pink Dye Other ABasic 1
 Blood Red Dye Other ABasic 1
 Celeste Green Dye Other ABasic 1
 Turquoise Green Dye Other ABasic 1


Gear Images

Dungeon Images