Quick answer: It depends on the mask. The four Acolyte masks open the Four Guardians’ Mirror, the three Nuo Mask Fragments form the Nuo Mask accessory, and the Bastion of Mó, Jade and Iron Butcher masks are Soul Tempering materials.
Acolyte masks
There are four Acolyte masks. Together they open the Four Guardians’ Mirror in Secrets at the Heart of the Lake.
- Yanru’s Blazing Mask
- Leiting’s Thunder Mask
- Guhe’s Venom Mask
- Hansui’s Frost Mask
Hansui’s Frost Mask drops when you defeat The Puppet Scavenger in the Crimson Manor.
Nuo Mask Fragments
The three Nuo Mask Fragments are Joy, Sorrow and Wrath. Collect all three and they form the Nuo Mask, an accessory built around summons. Its effect reads:
“Reduces the Remnant Spark cost of Summon-type Phantom Edges by 1. Summons gain Berserk, slightly increasing their damage while active.”
Masks that Soul Temper a weapon
Three masks are Soul Tempering materials. Each one is tied to a specific weapon.
| Mask | Soul Tempers |
|---|---|
| Bastion of Mó Mask | Sanguine into Infernal Rouge |
| Jade Mask | Seamless Death |
| Iron Butcher Mask | Jagged Steel |
Accessory masks
Besides the Nuo Mask, the Wraith Mask is an accessory you equip rather than spend. It rewards clean defense, and its effect reads:
“Triggering “Ghoststep” with a Parry or Perfect Dodge creates 3 Wraith Masks that automatically attack nearby enemies.”
