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Forbidden Knowledge

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Main Scenario Quest icon.png

Forbidden Knowledge

Forbidden Knowledge Image.png
Quest giver
Matoya's Cave (Zone) (X:6, Y:6)
Quest line
Heavensward Main Scenario Quests
Required items
1 On Aetheric Convergence Icon.png  On Aetheric Convergence
Experience 53,820
Gil 5,000
Previous quest
Main Scenario QuestMatoya's Cave
Next quest
Main Scenario QuestAn Eye for Aether

Main Scenario Progress: 326 / 853 (38.2%)


Heavensward Progress: 85 / 138 (61.6%)


Matoya is in a mood to reminisce.

— In-game description





  • Matoya shares with you the tale of her work on a device known as an aetheric converger, and how it led to a bitter falling-out between her and her peers. The fruits of her research were apparently compiled within a tome which now lies sealed within the Great Gubal Library, and you must overcome the dangers within if you wish to retrieve it. Ask Matoya for further instructions.
  • Matoya loans you one of her servants to guide you to the Great Library and unlock its long-sealed doors. Make yourself known to this servant -- a broom.
  • Having introduced himself as Broomsy, the surprisingly eloquent sweeping implement furnishes you with directions to the Great Library. Upon leaving Matoya's Cave, you are to make your way east; the library building will come into view upon gaining the collapsed bridge. Speak with Broomsy when you arrive, and he will unlock the door for you.
  • The Great Gubal Library is ready to receive its first visitors in fifteen years. Brave the dangers within and retrieve Matoya's tome.
  • You have survived the trials within the Great Gubal Library. Make your way back to the outside world.
  • Upon defeating the library's final guardian, the Crystal of Water regains the power of the Light. Soon after, you find what you can only assume is Matoya's tome on the aetheric converger. Bear the book back to Matoya, who awaits you within her cave.
  • Matoya confirms that you have retrieved the correct tome. All that remains is to put the knowledge it contains to use.


Accepting the Quest (Cutscene)

Matoya: 'Twas some fifty years ago, shortly after Garlemald had brought all of Ilsabard under its rule. 
Matoya: Faced with the threat of invasion, the people of Sharlayan scrambled about for a means to resist the Empire. For my part, I was tasked with developing an aetheric converger.
Y'shtola: Ah, yes, a device which draws in aether and concentrates it to produce a destructive force. 
Matoya: But as my research neared its end, it was denounced by the Forum, who claimed that my device was more likely to destroy us than our enemies. 
Matoya: After that, they and I had a little falling-out, and I decided to seal away all the fruits of my research, lest the dunderheaded ingrates repeat any benefit. Petty, I know, but gods, it was satisfying!
Y'shtola: Do mine ears deceive? 'Twas you, was it not, who was so fond of saying that all knowledge exists to advance mankind? That how it is used depends on us? 
Matoya: I don't remember. Perhaps. All right, yes, that was a pet phrase of mine. And that should give you a notion of how sick and tired I was of those spineless wretches of the Forum. All talk and no trousers, that lot. That's why I decided to remain behind rather than join the exodus. 
Alphinaud: You may have had your disagreements with my grandfather, but upon that point, your minds were as one.
Y'shtola: With respect, Master—the fruits of your research should not be left to spoil. Will you share with us the secrets of the aetheric converger? 
Matoya: Aye, I will. All the information you need is contained in a tome I wrote on the subject. But you'll have to fetch it from the forbidden section of the Great Library. 
Y'shtola: You were not exaggerating when you said that you had sealed it away. Though the city is abandoned, the library's guardians are all but certain to remain. We must needs cut a path through them. Come—let us away. 
Matoya: Not so fast! you don't expect that you can just waltz on in, now, do you? 

Optional Dialogue

Alphinaud: Do you see the tomes lying about like so many cheap romances? They are priceless. My professors at the Studium would have fits if they saw them in this state.
Y'shtola: Being here calls to mind my days studying under Matoya. Though she was the strictest—and most irascible—of mentors, she led by example and inspired one to greater heights. Were it not for her sage guidance, I should not be the woman I am.

Speaking with Matoya

Matoya: Oh, the Great Library's guardians shouldn't pose any difficulty for a hero like you.  
Matoya: But if it turns out you aren't up to the task... Well, then I'll know you can't be trusted with something as dangerous as an aetheric ram. 
Matoya: I'll put a pair of familiars at your disposal. One's a poroggo who'll help you locate the tome. 
Matoya: The other's that broom yonder, who'll let you into the library. 
... Well? What are you waiting for? Introduce yourself boy/girl! 

Optional Dialogue

Alphinaud: Among other things, Master Matoya is an authority in familiars. After we have tended to our task, perhaps I shall beg her for some insights on the subject...
Y'shtola: The Great Library was more than just a repository for tomes; it also served as a center of research for countless fields of study.
Y'shtola: Fields such as the development of arcane entities, the fruits of which were employed as the library's sentinels. We must be ever on our guard.
Matoya: Are you going to introduce yourself to that broom or not? No skin off my nose if you don't.

Speaking with the enchanted broom (Cutscene)

Enchanted Broom: Greetings, good sir/madam. I am Broomsy, my lady's servant of some fifty years. May I say what an honor it is to serve you! 
Broomsy I am given to understand you wish to enter the Great Gubal Library. To find it, pray head east upon leaving this cave. The building will come into view shortly after you reach the collapsed bridge. 
Broomsy I shall go and fetch my fellow familiar on my way to the entrance. When your preparations are in order, pray come and meet me there. It will be my pleasure to unlock the door for you.

Optional Dialogue

Matoya: What are you loitering around here for? Hurry up and fetch that book!
Pero Roggo: I am Pero Roggo, ribbit, and it shall be my pleasure to guide you in the library.
Y'shtola: As a child, I would often come here. Not only on Master Matoya's errands, but for my own research besides.
Alphinaud: The Great Gubal Library... Whatever the reason, it boggles my mind to think that such a grand repository of knowledge could be abandoned.

Speak with Broomsy at the Great Gubal Library

Broomsy: You stand before the Great Gubal Library, one of Hydaelyn's foremost repositories of knowledge. 
Broomsy: Alas, it has fallen into disuse since the exodus some summers since. In all those years, its halls have welcomed not the coming of a single soul—its floors felt not the loving brush of a broom...
Broomsy: M-Mine apologies, madam/sir! Pray pay no mind to the dreams of a humble broom. You are doubtless eager to venture within and retrieve my lady's tome. I shall unlock the door at once. When you have what you seek, pray return to the cave and report to my lady. 
Broomsy: I wish you good fortune in your search. When you have found what you seek, pray return to the cave and report to my lady.

Entering the Great Gubal Library

Duty Support Dialogue

Y'shtola: Pray lead the way. 
Pero Roggo: With pleasure, ribbit!
Y'shtola: Even at a glance, I see many interesting tomes. 
Alphinaud: 'Tis a pity they had to be abandoned.
Alphinaud: Is that supposed to be a grimoire!? 
Pero Roggo: Yes, but not the kind you want to read, ribbit.
Pero Roggo: Everyone hale and whole, ribbit? 
Alphinaud: Thank goodness we weren't crushed...
Pero Roggo: Watch out, ribbit! 
Alphinaud: What a curious familiar...
Y'shtola: Is that a treatise on the New World I spy? 
Alphinaud: Ah yes, I've read that one. I can recommend it.
Pero Roggo: The entrance to the forbidden section is just ahead, ribbit. 
Y'shtola: Which makes this fellow here the gatekeeper. 
Byblos: Argh, oil everywhere! You shall pay dearly, accursed mortals! 
Byblos: I am undone...but my master's seal is broken! 
Alphinaud: I wouldn't have guessed it weak to fire. 
Y'shtola: On account of being bound to a tome, I would assume.
Alphinaud: An arcane entity that can summon familiars! 
Y'shtola: The guardians of the forbidden section are a class apart.
Y'shtola: Forbidden tomes can certainly assume many forms...
Pero Roggo: Master Matoya's tome is at the far end, ribbit.
Alphinaud: Yet another guardian... 
Y'shtola: Did you ever doubt it? Come, let's finish this. 

Post Duty Cutscene

Alphinaud: So this is the tome. Excellent.
Alphinaud: Let us take it to Master Matoya at once. 

Optional Dialogue

Y'shtola: As expected, the library was rife with dangers, but full glad I am that I could accompany you.
Y'shtola: Depending on her mood, Master Matoya may well have forced some of us to stay behind to help repair her sentinels. With her, there's simply no telling...
Alphinaud: Ahem... Despite how it may have sounded, I do not exaggerate when I say it was a tremendous learning experience to observe one of Master Matoya's familiars. The insights I acquired, I shall put to good use.

Delivering the tome to Matoya

Matoya: I take it you found the tome. Well, let's see it, then.
<Hand Over On Aetheric Convergence>
Matoya: Aye, this is it all right...
Y'shtola: I must say, the experience brought back memories. Just like the old days, you still send people into the thick of danger as if it were nothing more than a mundane errand.
Alphinaud: But we were able to accomplish our task thanks to Pero Roggo. He is an eminently capable familiar - a creation worthy of the great Master Matoya - and to simply witness him in action gave me a better understanding of arcane entities. 
Alphinaud: Should the opportunity present itself, I should very much like to employ this knowledge for the betterment of mankind—create a  new variety of Carbuncle, perhaps...
Matoya: Don't get ahead of yourself, boy. Louisoux's grandson or no, it'll take another decade under me before you can call yourself a scholar, and a deal more than that to make you a scholar worth a damn. 
Y'shtola: As you may have gathered, Master Matoya is not easily impressed. 
Alphinaud: ... Indeed. Ahem. So, shall we examine the tome?