The Festering Fang
Last updated 2026-05-26
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The Runestone branch was obtained when Albedo drained Durin's heart after the player had collected all 4 non-vitalized Dragonteeth but before they spoke to Orban again. Are there differences (including small, one-word differences) if Albedo drains Durin's heart at these points instead?:
- Before even starting the quest, or at least before speaking to Orban for the very first time for this quest
- After speaking to Orban while having all 4 non-vitalized Dragonteeth (the quest step in progress: find a way to vitalize the Dragonteeth)
This article is about the quest. For the weapon of a similar name, see Festering Desire.
The Festering Fang is a World Quest that occurs in Mondstadt.
Start Location
Start the quest by picking up a ![]()
Strange Tooth from one of any four locations in Wyrmrest Valley.
Near the heart of Wyrmrest Valley
In a Fatui camp north of the Cryo Hypostasis
Steps
- Ask the adventurers at the camp for news
- Talk to Iris
- Talk to Orban
- Look for a Northlander Polearm Prototype (0/1)
- Look for 50 Starsilver Ore (0/50)
- Look for another three Strange Teeth (0/3)
- Talk to Orban
- If the player has not completed Step 7 of the Archon Quest The Gardener in Interlude Chapter: Act IV - Paralogism:
- Obtain a Vitalized Dragontooth [sic]
- Defeat all the Fatui
- Vitalize the Strange Tooth with energy from the heart
- Defeat all the Fatui
- Defeat the interloping Skirmishers
- Fatui Defeated: (0/8)
- Wave 1:
- Wave 2:
- Wave 3:
- Obtain a Vitalized Dragontooth [sic]
- Talk to Orban
- Submit

Empowered Dragontooth ×1, 
Starsilver ×50, and 
Northlander Polearm Prototype ×1
- Submit
- If the player has completed Step 7 of the Archon Quest The Gardener in Interlude Chapter: Act IV - Paralogism:
- Obtain a Dragontooth that has absorbed power
- Talk to Orban
- Submit

Empowered Dragontooth ×1, 
Starsilver ×50, and 
Northlander Polearm Prototype ×1
- Submit
Gameplay Notes
- After collecting the first Dragontooth, the other three Dragonteeth will not be accessible until the player talks to Orban.
- Completing this quest will grant the player the Visitors on the Icy Mountain achievement Dragonspear.
- After completing this quest, the four Dragonteeth in the open-world will respawn immediately. From this point onward, they will respawn every 48 hours after being harvested.
Dialogue
You picked up a strange dragon tooth while adventuring in Dragonspine. Perhaps you should ask around and see if someone knows anything more about it...
- (Obtain

Strange Tooth) - Paimon: Huh? What's this... Looks like a tooth.
- Paimon: Maybe there'll be some interesting history behind it? Let's go ask around.
- (Talk to Iris)
Any ideas about this tooth?- Iris: A tooth? Let me see.
- Iris: Hmm... Yes, it is a little unusual, both in shape and in size.
- Iris: I'm no expert on obscure materials... Orban may know something though, he comes across all sorts of materials in the process of forging weaponry
- Iris: Why not go and ask him? He's right over there, you can't miss him.
- (Talk to Orban)
What do you make of this tooth?- Orban: A tooth? Ugh, don't tell me you've been foraging around on the mountain for junk...
- Orban: ...Huh, although, as teeth go...
What? What is it?- Orban: This is a rather fine specimen. Tough as nails, too...
- Orban: And these contours... Looks an awful lot like Dragontooth to me.
What do you mean, "Dragontooth"?- Orban: As in, the tooth of a dragon. Weapons made from Dragontooth are supposed to be extraordinarily strong and sharp... and even possess some sort of strange power.
- Orban: It's hardly the sort of thing you come across every day, though... In all the stories you hear, it's only ever the most famous heroes who manage to acquire Dragontooth and craft weapons from it.
- Orban: As they say, if you plan on slaying the dragon to pinch his teeth... you'd better be sure to have a dragon-slayer of a weapon handy, or he might just bite back!
Then... is this really a dragon's tooth, or not?- Orban: Honestly, I've never dealt with Dragontooth firsthand, so I can't give a definite answer.
- Orban: I do think it has to be the tooth of some enormous beast or other...
- Orban: Anyway, since you've gone to all this effort... let's just treat it as if it really is a genuine, precious piece of Dragontooth, shall we?
- Orban: Hmm, but that said — it's not enough to make a weapon from.
- Orban: How about you go find, say, three more pieces of Dragontooth, and in the meantime, I'll do some reading and find out how to work with this stuff.
- Orban: Oh — and Dragontooth aside, we'll want to supplement it with some good ore...
- Orban: In which case, while you're up on the mountain, grab 50 pieces of Starsilver.
- Orban: Ah yes, and as well as all that... I'm also going to need a Northlander Polearm Prototype...
- Orban: Once you've got all of that, come and see me again.
- (Talk to Orban again, optional)
Thoughts on this Dragontooth?- Orban: I can't say whether it really is Dragontooth or not, but the quality is superb. A few more like this, supplemented with some Starsilver, and you could definitely make a good weapon from it.
- Orban: As soon as you've gathered all that, bring the goods straight back here.
You pass the Strange Tooth to Orban, and he says that this can be used to forge a weapon. But he also notes that you will need to collect 3 such teeth, 50 Starsilver Ore, and one Northlander Polearm Prototype to do so.
- (Approach the strange "heart" in Wyrmrest Valley)
- Paimon: Wow, it's... What is it?
- Paimon: It looks just like a heart, doesn't it?
- Paimon: ...Can we go now? It really is super creepy in here.
- (If the player has not completed Step 7 of the Archon Quest The Gardener in Interlude Chapter: Act IV - Paralogism)
-
- (Proceed to Durin's Heart Version)
- (Otherwise)
-
- (Proceed to Runestone Version)
Durin's Heart Version
- (Talk to Orban after obtaining the Dragonteeth, Starsilver ore, and Polearm billet)
I found some more Dragontooth...- Orban: Ah, I was hoping you'd swing by. Listen, before you go gathering all that Dragontooth... Oh. I see you've already finished.
- Orban: My profuse apologies... but I've hit a slight snag. No matter what I hit this thing with, I simply cannot take so much as a sliver off of it.
- Orban: It's almost as if it really were Dragontooth... If so, then based on what I read, there are several rather specific methods to work with this material.
- Orban: One of them is to have the dragon's tooth absorb some sort of... dragon-related "vitality."
- Orban: Then, use the dragon's tooth infused with dragon vitality to work the other pieces of Dragontooth into shape.
- Orban: But how to go about infusing something with dragon vitality... I haven't the foggiest idea.
- Orban: Any thoughts, Traveler?
I'll, um... see what I can do.- Orban: Great! Here — you take this Dragontooth, then, and I'll leave that whole side of things to you.
- Orban: Huh, if just the teeth cause this much hassle, whole dragons must be seriously complicated creatures...
- (After talking to Orban)
- Paimon: Wait, do you remember that place from earlier? Wasn't there something that looked a lot like a heart?
- Paimon: Let's try there! Maybe there's some vitality around there that we can absorb into the Dragontooth.
- Paimon: Let's not stay there longer than we need to, though. That place gives Paimon the creeps.
Though you have gathered all the necessary materials, Orban says that he cannot use ordinary means to work with these dragonteeth... You must first fill one Dragontooth with vitality in order to utilize the rest. Perhaps that strange... "heart" you found on Dragonspine will be of help in this matter...
- (Interact with the heart after defeating the Fatui in the cave)
???- Core: (A strange glow emanates from this peculiar object...)
Extract Vitality with Dragontooth
- (Submit

Strange Tooth)
- (Submit
- Core: (This strange object seems to be reacting...)
- Paimon: The heart responded! Careful, we should expect the unexpected...
- Paimon: Wait... there's some people coming!
- (Fatui Skirmishers appear at the cave entrance)
- Paimon: Yikes! This isn't what Paimon meant by unexpected...
- Fatui Skirmisher: Hmph. So, your plans also involve the heart.
- Fatui Skirmisher: No matter, it seems you have saved us a great deal of work.
- Fatui Skirmisher: But our plans do not include others being privy to this secret!
- (After defeating all the Fatui Skirmishers)
- Paimon: Paimon thinks it's finished now...
- Paimon: Let's go check on the Dragontooth.
- (Interact with the heart)
- Paimon: Interesting... Something looks a little different about this Dragontooth now. And it seems more ominous, too...
- Paimon: Let's get back and give it to Orban.
- (Obtain

Empowered Dragontooth ×1)
- (Talk to Orban)
I'm here about the Dragontooth again...- Orban: My goodness, the luster... and the texture...
- Orban: You actually managed it? You infused the tooth with dragon vitality? Wow... You are one extraordinary individual, my friend.
- Orban: This is great... I've already got someone to handle the Starsilver. Give me a moment or two, I will get this weapon made right away...
- (Submit

Empowered Dragontooth ×1, 
Starsilver ×50, and 
Northlander Polearm Prototype ×1)
- (Proceed to Ending)
Runestone Version
- (Talk to Orban after obtaining the Dragonteeth, Starsilver ore, and Polearm billet)
- Orban: Ah, I was hoping you'd swing by. Yes, about those Dragonteeth... Oh, I see you've already finished gathering them up.
- Orban: When you were off exploring, I ended up hitting a slight snag over here... No matter what I hit this Dragontooth with, I simply cannot take so much as a sliver off of it.
- Orban: I've never seen anything like this before, so I had someone talk to Mr. Albedo to see how we should deal with these materials.
- Orban: And so, if you look over yonder, you'll see that Mr. Albedo had Miss Sucrose send over a Runestone. It's right on the Alchemist's Crafting Bench.
- Paimon: A Runestone? What's that got to do with our Dragonteeth?
- Orban: Well, according to what Miss Sucrose relayed to us from Mr. Albedo, we need to give the material some special treatment before we can use it to forge weapons.
- Orban: One of said methods is to have one Dragontooth absorb dragon-related "vitality," then use the vitalized Dragontooth to treat other Dragonteeth.
- Orban: As for what Miss Sucrose said about the Runestone... Ah, yes, she said it was "a relic left to the Knights of Favonius by a wandering troupe that helped Mondstadt rebel against the old nobility a thousand years ago."
- Orban: The flautist of that troupe once fought against a monster known as "Bakunawa" in the Mare Jivari. This Runestone was carved from its body...
- (If the player has completed Event Story Quest Night-Wind Letter in Iktomi Spiritseeking Scrolls: Volume I[verification needed])
-
- Paimon: Eh? Wait a sec, if Paimon's memory isn't failing her, didn't Citlali tell us that the Mare Jivari was created by Sanhaj's battle with the Abyss... five hundred years ago?
Are we sure the troupe's story is from a thousand years back?- Orban: Haha, how could it be mistaken? That wandering troupe's story of heroism has long since been recorded in the "History of Kings and Clans."
- Orban: Anyway, Mr. Albedo said that this Runestone contains "infinite vitality," similar to that of a dragon.
- Orban: All you need to do is use the Crafting Bench to absorb the vitality of the Runestone with the Dragontooth, then we can get to forging our weapons.
- Paimon: That sounds impressive... as expected of Albedo...
We'll have to thank him later.- Paimon: Yeah! If not for him, we'd be totally stuck... Anyway, (Traveler), let's try absorbing the Runestone's power!
Alrighty, I'll handle it.- Orban: Haha, that's great! Here — you take this Dragontooth, and I'll leave that whole side of things to you.
- Orban: Alchemy's truly something else, huh... How does one even absorb "vitality" from a thousand year-old stone?
All materials have been gathered, but the Dragontooth needs to absorb "power" before it can be forged...
- (Interact with the Crafting Bench)
(Extract Power With Dragontooth)- Alchemist's Crafting Bench: (The Runestone on the Crafting Bench emits a strange glow...)
Place the Dragontooth- (Submit

Strange Tooth) - (Obtain

Empowered Dragontooth)
- (Talk to Orban)
- Orban: Hey, Traveler, how'd it go? Did you let your Dragontooth absorb vitality from the Crafting Bench over there?
- Orban: This luster, this texture... Hoho, this is it!
- Orban: Hahaha! I never knew alchemy could work such miracles. That's Mr. Albedo for you!
- Orban: Thanks for your help. I can't work any alchemy to save my life. Right, now that we've got all the materials we need, give me a moment or two, and I'll get this weapon made right away...
- (Submit

Empowered Dragontooth ×1, 
Starsilver ×50, and 
Northlander Polearm Prototype ×1)
- (Proceed to Ending)
Ending
- (After submitting the items)
- Orban starts forging the weapon...
- Orban: There! It's done! Haha! Here, hold that. How does it feel?
How much do I owe you?- Orban: Oh, don't worry about paying for it. The chance to work with these materials was a rare pleasure, no need to bring Mora into it.
- Orban: Alright. I'd say this weapon is ready for an adventure, wouldn't you? I hope you'll take good care of it.
Video Guides
Other Languages
| Language | Official Name | Literal Meaning |
|---|---|---|
| English | The Festering Fang | — |
| Chinese (Simplified) | 腐殖之牙 Fǔzhí zhī Yá | The Decaying Fang |
| Chinese (Traditional) | 腐殖之牙 Fǔzhí zhī Yá | |
| Japanese | 腐植の牙 Fushoku no Kiba | The Decaying Fang |
| Korean | 부식의 이빨 Busik-ui Ippal | Tooth of Corrosion |
| Spanish | El diente ponzoñoso | The Poisonous Tooth |
| French | Dent suppurante | Festering Tooth |
| Russian | Клык разложения Klyk razlozheniya | Fang of Decay |
| Thai | คมเขี้ยวแห่ง Festering Desire Khom Khiao haeng Festiring Desire | Fang of Festering Desire |
| Vietnamese | Răng Mục Nát | Putrid Tooth |
| German | Der Zahn der Verderbnis | The Tooth of Corruption |
| Indonesian | Taring yang Membusuk | Rotting Fang |
| Portuguese | Dente Pútrido | Putrid Tooth |
| Turkish | Kanlı Diş | |
| Italian | La zanna infetta | The Infected Fang |
Change History
Released in Version 1.2
Version 5.6
- Added branch triggered by partial completion of the Archon Quest The Gardener in Interlude Chapter: Act IV - Paralogism.
- December 31, 2020 — Fixed an issue whereby Travelers were unable to collect the Strange Tooth quest item in certain situations.
- December 23, 2020 — The Festering Fang was released.




