Key of Khaj-Nisut – How to Get, Ascension, Stats & Who Can Use It in Genshin Impact

The Key of Khaj-Nisut is a five-star sword designed to boost the wearer’s HP and Elemental Mastery, and apply a party-wide Elemental Mastery buff that scales based on the wearer’s HP. It’s the perfect companion for HP scale characters, such as Nilou and Kuki Shinobu.

How to get Khaj-Nisut Key in Genshin Impact

The Key of Khaj-Nisut is a limited weapon that can only be obtained when featured in the Epitome Summoning banner, which you can wield using Primogems and Intertwined Fates. As such, you must wait for it to spin up and blaze an incarnate path to secure the Third Mercy’s Key to Khaj-Nisut.

Genshin Impact Key of Khaj-Nisut Stats

  • Basic Attack: 44-542
  • Substat: HP (14.4-66.2%)
  • Passive: Sunken Song of the Sands: HP increased by 20 / 25 / 30 / 35 / 40%. When an elemental skill hits opponents, you gain the Great Anthem effect for 20 seconds. This effect increases the elemental mastery of the character who equips it by 0.12/0.15/0.18/0.21/0.24% of their max HP. This effect can trigger once every 0.3 seconds. Max 3 batteries. When this effect gains 3 stacks, or when the duration of the third stack refreshes, the Elemental Mastery of all nearby party members will be increased by 0.2/0.25/0.3/0.35/0, 4% of the character’s max HP for 20 seconds.


Genshin Impact Key of Khaj-Nisut Ascension cost and materials

Below are all the ascension materials needed for the Key of Khaj-Nisut. They can be grown from the following:

  • Satin/Silk/Brocade—Eremites
  • Prism—Primal Constructs
  • Forest Dew Talisman – Tower of Abject Pride (Monday, Thursday, Sunday)

Ascent Phase 1

x10,000 Must

x3 Faded Red Satin

x5 damaged prism

x5 Copper Talisman of Forest Dew

Ascent Phase 2

x20,000 Must

x12 Faded red satin

x18 damaged prism

x5 Copper Talisman of Forest Dew

Ascent Phase 3

x30,000 Must

x9 Trimmed Red Silk

x9 Cloudy Prism

x9 Forest Dew Iron Talisman

Phase 4 Ascent

x45,000 Mora

x14 Trimmed Red Silk

x18 Cloudy Prism

x5 Silver Talisman of Forest Dew

Phase 5 Ascent

x55,000 Mora

x9 Rich Red Brocade

x14 Radiant Prism

x9 Forest Dew Silver Talisman

Phase 6 Ascension

x55,000 Mora

x18 Rich Red Brocade

x27 Radiant Prism

x6 Golden Forest Dew Talisman

Who can use Khaj-Nisut’s Key in Genshin Impact

Khaj-Nisut’s Key focuses on boosting HP and Elemental Mastery based on the wielder’s HP, so it’s the perfect weapon for support characters whose kits also revolve around those two stats. It is therefore a niche weapon that can only be used effectively by two characters:

However, since the Key of Khaj-Nisut also improves the wielder’s and team’s elemental mastery, it’s a good idea to build the wielder in a way that allows them to constantly trigger elemental reactions. This could mean choosing a Bloom build for Nilou instead of just focusing on her personal DPS. Additionally, you may want to add characters that benefit from Elemental Mastery in the team to effectively trigger the weapon’s passive bonus.

For more weapon guides, check out Amos’ Bow: How to Get It, Ascension, Stats, and Who Can Use It in Genshin Impact.