Iansan Guide and Best Builds

Iansan Guide and Best Builds for Genshin Impact

Iansan is a 4-Star Electro character in Genshin Impact who buffs and heals. Read our Iansan guide to learn more about Iansan's kit, Iansan's best Builds and also her Ascension and Talent Materials.

Last updated on Feb 28, 2025 at 09:00 by Shikhu
Electro Element
Polearm Weapon
Rarity
Katrina Salisbury EN Voice Actor
Ohashi Ayaka JP Voice Actor
1.

Iansan Strengths and Weaknesses

V Strengths
  • +Great ATK buffs while also being the perfect Scroll holder meaning she has amazing Party utility.
  • +Easy to build only needing ER and ATK %.
  • +Constellations are incredibly valuable with C2 and C6 providing significant boosts on top of an already good kit.
X Weaknesses
  • -ATK Buff is entirely reliant on how mobile the character is, with characters who do not move around the field barely gaining the buff.
  • -Healing can be considered a little low meaning a second sustainer may be required depending on your team composition and the content your using Iansan in.
  • -Due to lower healing output, Iansan can struggle with generating Fanfare on a C0 Furina.
2.

Iansan Build Guide, Best Artifacts, Weapons and Talent Priority

Iansan is best built as a support, able to provide a range of buffs to the party as well as healing too. Our build guide for Iansan covers everything you need to know about how she is best built.

BiS Weapon Calamity Queller
Alternative Weapons
  1. Engulfing Lightning
  2. Favonius Lance
  3. Vortex Vanquisher
  4. Staff of Homa
  5. Lumidouce Elegy
  6. Missive Windspear
  7. Tamayuratei no Ohanashi
  8. 4-Star ATK Increasing Stat Sticks
Best Artifacts
  1. Scroll of the Hero of Cinder City
  2. Noblesse Oblige
Main Stats
  • Sand Stats: ATK % / Energy Recharge
  • Goblet Stats: ATK %
  • Circlet Stats: ATK % / CRIT Rate (With Favonius)
Substat Priority
  • Energy Recharge to requirements
  • ATK %
  • CRIT Rate (With Favonius)
Talent Priority
  • Elemental Burst

Iansan's best weapon is Calamity Queller with it being the easiest weapon to cap her ATK on. That being said if the Energy Recharge requirements for your team are on the higher end, Engulfing Lightning or Favonius Lance can often be better options, especially if you have a good ATK % Sands and would therefore not want to swap to an ER sands.

Scroll of the Hero of Cinder City is almost always Iansan's best artifact set to build her with. The only time you may not want to use scroll is either when you have other better-built characters in the party using this artifact set or if she cannot react with the primary element of this team. In those situations, build Iansan with Noblesse Oblige.

Only Iansan's Elemental Burst is needed when building Iansan as a support.

2.1.

Iansan's Energy Recharge Requirements

Iansan's energy recharge requirements depend on how many Electro characters are in the party as well as if Iansan is C0 or C1+. If using an ER weapon such as Engulfing Lightning or Favonius Lance then her requirements will be lower.

 Constellation 0 Constellation 1
1 Electro 215-260% 170-200%
2 Electro 135-170% 115-130%
3.

Iansan's Best Team Compositions

Iansan is a very flexible buffer and also scroll holder for many team compositions. She is best placed in teams with ATK-scaling DPS. That being said, because of Iansan's Elemental Burst, Iansan is by far more suited to characters with high mobility or DPS from Natlan.

Characters like Mavuika, Varesa, Kinich for example are Natlan characters who all have high mobility in their kits. Other characters such as Xiao or any character acting as a plunge DPS with the assistance of Xianyun also count as vertical mobility contributes towards the ATK buff.

3.1.

Plunge DPS Team Examples With Iansan

Main DPS Support Support Support
Varesa Furina Iansan Xianyun
Gaming Bennett Iansan Citlali

Listed are some examples of Plunge DPS teams that utilise Iansan with both Varesa and Gaming being powerful DPS. Both Gaming and Varesa have a mix of horizontal and vertical mobility in their kits allowing them to easily maintain Iansan's ATK buff.

3.2.

Natlan DPS With Iansan

Main DPS Support Support Support
Chasca Furina Iansan Bennett
Mavuika Xilonen Iansan Citlali

Listed are some examples of Natlan DPS that benefit from having Iansan in their teams. In Mavuika melt teams, Iansan is normally a replacement for either Bennett or Xilonen. In Chasca teams you ned to make sure you move while loading bullets to maintain the ATK buff.

3.3.

Other DPS With Iansan

Main DPS Sub DPS Support Support
Clorinde Mavuika Iansan Chevreuse

The best example of a non-natlan or plunge DPS that works with Iansan is Clorinde. While Clorinde has less mobility than the other characters mentioned, she is still able to maintain the ATK buff under most situations.

4.

Iansan's Ascensions, Talents, and Constellations

Iansan Ascensions Iansan Talents Iansan Constellations
4.1.

Iansan Ascension Passives and Materials

Ascension Passive Explanation
Enhanced Resistance Training

After Swift Stormflight hits opponents, Iansan will gain the Precise Movement effect for 15s.

During this time, her ATK is increased by 20%, and whenever she regains Nightsoul points through the Kinetic Energy Scale in her Elemental Burst, The Three Principles of Power, she will gain 1 extra Nightsoul point. Additionally, when your current active party member consumes or restores Nightsoul points, the extra Nightsoul points Iansan gains the next time she restores Nightsoul points via the Scale will be increased to 4. This effect can occur once every 2.8s.

"Precise Movement" will expire when Iansan's Nightsoul's Blessing state ends.

Kinetic Energy Gradient Test

When a nearby party member triggers a Nightsoul Burst, Iansan will obtain the Warming Up effect for 10s.

During this time, when Iansan restores at least 1 Nightsoul point, she will heal your current active character for 60% of her ATK. This effect can be triggered once every 2.8s.

Night Realm's Gift: Hard Work and Drive

After Nightsoul points have been fully depleted and Iansan is on the field, she will switch to using Phlogiston to maintain her Nightsoul's Blessing.

While in an area with Phlogiston Mechanics within Natlan, Nightsoul Transmission: Iansan can be used. When the current active character is sprinting or in movement modes caused by certain Talents, or at a certain height in the air, switching to Iansan will trigger the following: Iansan enters the Nightsoul's Blessing state and obtains 25 Nightsoul points. Nightsoul Transmission can be triggered once every 10s by your own party.

While in an area with Phlogiston Mechanics within Natlan, Iansan will not take fall DMG when using terrain differences to make leaps.

Caloric Balancing Plan

While in an area with Phlogiston Mechanics within Natlan, regain 10 Phlogiston when Phlogiston levels drop below 50%. This can occur once every 10s.

4.2.

Iansan's Ascension Materials

Iansan gains ATK % as she levels giving her a total of 24.0% ATK % at level 90.

The total Ascension Material costs to upgrade all of Iansan's Ascensions are listed below.

Source Quantity
Mora 420,000 Mora
Boss Material 46x Ensnaring Gaze
Ascension Material
Local Specialty 168x Dracolite
Enhancement Material
  • 18x Sentry's Wooden Whistle
  • 30x Warrior's Metal Whistle
  • 36x Saurian-Crowned Warrior's Golden Whistle
4.3.

Iansan's Talents

Type Talent Name Brief Explanation
Normal Normal Attack: Weighted Spike

Normal Attack

Performs up to 3 consecutive spear strikes.

Charged Attack

Consumes a certain amount of Stamina to lunge forward, dealing damage to opponents along the way.

Plunging Attack

Plunges from mid-air to strike the ground below, damaging opponents along the path and dealing AoE DMG upon impact.

Nightsoul State: Swift Stormflight

While in the Nightsoul's Blessing state: Iansan's Charged Attack will be transformed into the formidable Swift Stormflight, consuming a certain amount of Stamina to stomp fiercely down, dealing Nightsoul-aligned AoE Electro DMG.

Elemental Skill Thunderbolt Rush

Iansan charges forward a certain distance, dealing Nightsoul-aligned Electro DMG to all opponents in her path.

After this Skill is used, Iansan will regain 54 Nightsoul points and enter the Nightsoul's Blessing state. Within 5s after this is done, using a Normal Attack will trigger 1 quick Swift Stormflight stomp from Iansan that will not consume Stamina.

Nightsoul's Blessing: Iansan

Continuously consumes Nightsoul points. If she runs out, or uses this Skill again, her Nightsoul's Blessing state will end. It has the following properties:

  • Increases Iansan's Movement SPD.
  • Holding sprint will switch Iansan to Rushing Thunderbolt mode, greatly increasing her Movement SPD temporarily. In this mode, Iansan can make flying leaps using terrain, or consume additional Nightsoul points to move on water or liquid Phlogiston while being immune to DMG from the latter
Elemental Burst The Three Principles of Power

Iansan's stomping foot shatters the very earth with "Power," dealing Nightsoul-aligned AoE Electro DMG. She then whips out her "Limited-Edition Kinetic Energy Scale (For Workouts)." When this Skill is used, Iansan will gain 15 Nightsoul points and enter the Nightsoul's Blessing state. When the Kinetic Energy Scale leaves the field, Iansan's Nightsoul's Blessing state will end.

Kinetic Energy Scale

The Kinetic Energy Scale will follow the character around, boosting the ATK of your current active party member in different ways based on Iansan's Nightsoul points.

  • If Iansan has less than 42 Nightsoul points, the ATK bonus will be based on her Nightsoul points and ATK.
  • If Iansan has at least 42 Nightsoul points, the Kinetic Energy Scale will switch to the "Ardent Support!" state, in which the ATK bonus will be stronger and based on her ATK alone.

Additionally, the Scale will log the distance your current active character (excluding Iansan) has moved so long as it is active, restoring Nightsoul points to Iansan every second based on the distance moved in the previous second. The Scale will disappear once her Nightsoul's Blessing state ends. It will also disappear after 1 second when you are not in a state of combat. While it is active, Iansan's Nightsoul's Blessing state will not end even if she is not on the field.

4.4.

Iansan's Talent Materials

The total material costs to upgrade a single one of Iansan's Talents is listed below.

Source Quantity
Mora 1,625,500 Mora
Special Material 1x Crown of Insight
Boss Material 6x Denial and Judgment
Domain Material
  • 3x Teachings of Contention
  • 21x Guide to Contention
  • 38x Philosophies of Contention
Enhancement Material
  • 6x Sentry's Wooden Whistle
  • 22x Warrior's Metal Whistle
  • 31x Saurian-Crowned Warrior's Golden Whistle
4.5.

Iansan's Constellations

Iansan has some amazing constellations with C1, C2 and C6 all being great boosts to her supportive playstyle. C1 reduces Energy Recharge requirements, C2 provides an ATK buff while C6 provides a DMG buff.

# Name Explanation
C1 Starting's Never Easy

When Iansan is in combat and is in the Nightsoul's Blessing state, she will restore 15 Elemental Energy for every 6 Nightsoul points she consumes. This effect can trigger once every 18s.

C2 Laziness is the Enemy!

When using the Elemental Burst The Three Principles of Power, Iansan will also gain the Precise Movement effect from her Passive Talent "Enhanced Resistance Training" for 15s. Additionally, if Iansan is off-field while Precise Movement is active, she will also increase your current active character's ATK by 30%. You must first unlock the Passive Talent "Enhanced Resistance Training" to access the above effect.

C3 Scientific Diet Planning Increases the Level of Thunderbolt Rush by 3.
C4 Slow and Steady Wins the Race

When the Kinetic Energy Scale is present, Iansan will gain 2 stacks of Surging Force after your current active character (excluding herself) uses their Elemental Burst. The stacks last until the Scale leaves the field, and Surging Force can be gained once per Scale summoning. Whenever Iansan restores Nightsoul points via the Scale, she will consume 1 Surging Force stack and restore 4 additional Nightsoul points. Additionally, if her Nightsoul restoration from the Scale overflows, Iansan will gain 50% of the overflow the next time she restores Nightsoul points via the Scale.

C5 We Can Push It Further! Increases the Level of The Three Principles of Power by 3.
C6 Teachings of the Collective of Plenty

The Kinetic Energy Scale's duration is increased by 3s. Additionally, when Iansan triggers Nightsoul point restoration, if there is any overflow, she will gain the Extreme Force effect, which increases the DMG dealt by your current active character by 25% for 3s.

4.6.

Changelog

  • 28 Mar. 2025: Full guide.
  • 13 Feb. 2025: Initial Page release.
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