Lightless Mass is a weekly boss talent material in Genshin Impact, dropped by All-Devouring Narwhal. This page lists which characters use Lightless Mass, how many each one needs, and how to farm it, as of version 7.0.
- Dropped by
- All-Devouring Narwhal
- Domain
- Laments of the Fallen
- Used by
- 3 characters
- Per character
- 6 per talent, 18 for all three
Characters who use Lightless Mass
Each of these characters needs Lightless Mass for every talent level from 7 to 10, and no other weekly boss material.
Furina5★ Hydro
Mualani5★ Hydro
Gaming4★ Pyro
| Character | Rarity | Element | Weapon | Region |
|---|---|---|---|---|
| Furina | 5★ | Hydro | Sword | Fontaine |
| Mualani | 5★ | Hydro | Catalyst | Natlan |
| Gaming | 4★ | Pyro | Claymore | Liyue |
How many Lightless Mass you need
Talent levels 7 and 8 take 1 each and levels 9 and 10 take 2 each: 6 per talent, 12 for Skill and Burst, 18 for all three. Taking every character above to 10/10/10 would take 54, roughly 20 clears of All-Devouring Narwhal at 2.7 materials a clear, counting the Lightless Eye of the Maelstrom and Lightless Silk String it also drops as converted with Dream Solvent (the same assumption the calculator makes).
Most players stop well short of that. The Trounce Domain Recommender reads your account export, subtracts what you already own and ranks all 14 weekly bosses by what you are actually short of.
Where to farm Lightless Mass
All-Devouring Narwhal, in Fontaine, drops Lightless Mass, Lightless Eye of the Maelstrom and Lightless Silk String. Your first three weekly boss rewards each week cost 30 Original Resin and later ones 60. A spare Lightless Eye of the Maelstrom or Lightless Silk String can be turned into Lightless Mass with Dream Solvent, 1 for 1, so a surplus from the same boss is never wasted.
Which weekly boss should you farm this week?
The Trounce Domain Recommender works it out from your own characters and inventory.
Open the weekly boss calculatorQuestions
Which characters use Lightless Mass?
3 characters as of Genshin 7.0: Furina, Mualani and Gaming.
How many Lightless Mass do I need?
6 per talent taken from level 6 to 10 (1 each at levels 7 and 8, 2 each at 9 and 10), so 12 for Skill and Burst and 18 for all three talents. Talent levels 1 to 6 use none.
Where do I get Lightless Mass?
From All-Devouring Narwhal, the weekly boss in the Laments of the Fallen domain (Fontaine). Each clear drops 2 to 3 of its talent materials, a mix of Lightless Mass, Lightless Eye of the Maelstrom and Lightless Silk String, and Dream Solvent converts between the three 1 for 1.
Genshin Impact 7.0 data from genshin-db, the same data the calculators on this site use. Updated .