Northlander Catalyst Billet

Prototype Northlander Catalyst BilletItem TypeMaterial
UsageForging
Rarity4 Star
SourceObtainable from Weekly Bosses

Item Description

Weapon forging material. Can be used to forge 4-star catalysts. Philosophers believe marble has the potential to be sculpted into a beautiful statue. Likewise, these billets have the potential to become something greater.

Usage: Weapon Forging

Previously known as Northlander Catalyst Prototype, this prototype material are used to forge 4 craftable weapon:

Catalyst FrostbearerFrostbearerCatalyst Mappa MareMappa MareCatalyst Prototype AmberPrototype AmberCatalyst Hakushin RingHakushin Ring

Where to Get Northlander Catalyst Billet?

Reward from Adventurer Handbook Chapter 4

You can get Northlander Catalyst Billet after completing all quest from Adventurer Handbook Chapter 4. From what I remember, this was around AR 20-21 after you unlock last Anemo Statue in Stormterror Lair (part of quest in Chapter 4)

Adventurer Handbook Chapter 4
Adventurer Handbook Chapter 4

Buy From Xingxi, Mingxing Jewelry in Liyue Harbor

Xingxi from Mingxing Jewely in Liyue Harbor selling some weapon prototype materials, which including Northlander Catalyst Billet. All weapon prototypes in her souvenir shop can be purchased with 225 Geo Sigil which can be collected during player journey across Liyue.

Other than Catalyst prototype, she also sell Bow Billet, Claymore Billet, and Polearm Billet.

Xingxi Owner of Mingxing Jewelry Can Be Found In Liyue Harbor
Xingxi Owner of Mingxing Jewelry Can Be Found In Liyue Harbor
Xingxi Wares in Mingxing Jewelry Including Northlander Catalyst Prototype
Xingxi Wares in Mingxing Jewelry Including Northlander Catalyst Prototype

Dropped From Weekly Bosses

Northlander Catalyst Billet also have a chance to drop from weekly boss fight.

Weekly Boss Stormterror DvalinStormterror DvalinWeekly Boss Andrius Wolf Of NorthAndrius Wolf of NorthWeekly Boss ChildeChildeWeekly Boss AzhdahaAzhdaha