Guide to Iansan in Genshin Impact: Builds, Team Compositions, and Advanced Strategies

Iansan, the 4-star Electro polearm user introduced in Version 5.5, is a versatile support character specializing in attack buffs, off-field Electro application, and mobility-based mechanics. This guide covers her optimal builds, team synergies, and strategies to maximize her utility in both exploration and combat scenarios.  

1. Role and Core Mechanics  

Role Overview  

Iansan functions as a hybrid buffer/support, providing dynamic attack boosts to on-field DPS characters based on their movement and her "Night Soul" gauge. Her kit rewards teams with agile playstyles, making her ideal for characters reliant on dash or plunge attacks.  

Key Mechanics  

- Night Soul System:  

  - Generated via her Elemental Skill (E) and Burst (Q), Night Soul fuels her buffs. Allies’ movement during combat also restores Night Soul, encouraging pairing with mobile DPS like Xiao or Wanderer.  

- Elemental Burst (Q): Deploys a "Kinetic Marker" that boosts allies’ ATK based on Iansan’s total ATK and Night Soul reserves. At ≥42 Night Soul, the buff scales purely from her ATK.  

- Elemental Skill (E): A dash that grants mobility boosts and enables a free "Thunderous Strike" (charged attack variant), restoring Night Soul.  

2. Optimal Builds  

Weapon Recommendations  

- Best-in-Slot:  

  - Staff of Homa: Balances ATK and survivability.  

  - Engulfing Lightning: Maximizes Energy Recharge (ER) and ATK scaling.  

- F2P Options:  

  - The Catch (R5): Enhances Burst uptime.  

  - Favonius Lance: Generates particles for team energy.  

Artifacts  

- Ember-City Hero’s Chronicle (4pc): Grants 40% DMG bonus when triggering Electro reactions. Ideal for teams with consistent elemental triggers.  

- Noblesse Oblige (4pc): Boosts team ATK by 20% after Burst. Use if another teammate isn’t already using it.  

- Main Stats:  

  - Sands: ER% / ATK%  

  - Goblet: Electro DMG% / ATK%  

  - Circlet: CRIT Rate/DMG or Healing Bonus (if using her minor healing).  

3. Talent Priority and Rotation  

- Priority: Elemental Burst (Q) > Elemental Skill (E) > Normal Attack (NA).  

- Rotation Example:  

  1. Iansan: E (dash) > Q.  

  2. Support: Apply buffs/debuffs (e.g., Kazuha’s VV shred).  

  3. DPS: Deal damage while maintaining mobility to restore Night Soul.  

4. Team Compositions  

Plunge Attack Teams  

- Iansan + Xiao + Xianyun + Furina:  

  - Xiao’s plunge attacks synergize with Iansan’s mobility-based buffs. Xianyun further enhances plunge DMG.  

Electro-Charged Teams  

- Iansan + Yae Miko + Kokomi + Kazuha:  

  - Iansan’s off-field Electro pairs with Hydro for consistent reactions. Kazuha groups enemies and buffs Electro DMG.  

Overload Teams  

- Iansan + Yoimiya + Chevreuse + Bennett:  

  - Chevreuse reduces Pyro/Electro RES, while Bennett provides healing and ATK buffs.  

5. Constellation Breakdown  

- C1: Energy restoration every 18s, improving Burst uptime.  

- C2: Grants 30% ATK boost to on-field characters during Burst. A major power spike.  

- C6: Extends Burst duration by 3s and adds 25% DMG bonus during Night Soul overflow.  

6. Advanced Tips  

1. Energy Management: Aim for 180–200% ER (C1 reduces this to ~150%).  

2. Animation Canceling: Chain her E dash into a quick Thunderous Strike to save time.  

3. Movement Optimization: Pair with characters like Wanderer or Keqing to maximize Night Soul generation.  

7. Pros and Cons  

- Strengths:  

  - High ATK buff potential (up to 810 ATK at Talent Lv13).  

  - Unique synergy with mobile DPS.  

- Weaknesses:  

  - Requires precise energy management.  

  - Limited utility in stationary teams.