Flins, a 5-star Electro Polearm character from Nod-Krai, was introduced in Genshin Impact 6.0 on September 30, 2025, and receives his first rerun banner in Version 6.4 Phase 1 starting February 25, 2026. As a Lightkeeper, he’s a Main DPS with Electro-infused attacks, Lunar-Charged reactions (an enhanced Electro-Charged variant that can CRIT), and quick-swap Burst potential. Scaling off ATK, Elemental Mastery (EM) via passives, and CRIT, he thrives in short rotations with Hydro and Nod-Krai teammates. This updated Flins build guide covers everything for Genshin Impact 6.4, including meta refinements and rerun details.

Base Stats at Level 90 (Ascended):
  • HP: 12,491
  • ATK: 352
  • DEF: 809
  • Ascension Stat: CRIT DMG +38.4%

Talents

Normal Attack: Pocztowy Demonspear

  • Up to 5 consecutive spear strikes.
  • Charged Attack: Consumes stamina to toss spear forward.
  • Plunging Attack: AoE DMG on impact and path.

In Manifest Flame, Normal/Charged become Electro (Lunar-Charged eligible).

Elemental Skill: Ancient Rite: Arcane Light

  • Enters Manifest Flame (10s): Electro infusion, interruption resistance, no Plunging.
  • Hold/press again: Northland Spearstorm - AoE Electro DMG, generates particles (2s CD).
  • CD: 16s. Enables Thunderous Symphony Burst variant.

Elemental Burst: Ancient Ritual: Cometh the Night

  • AoE Electro + phased Lunar-Charged DMG (extra hits with thunderclouds).
  • Energy: 80. CD: 20s.
  • Thunderous Symphony (post-Spearstorm): 30 Energy, single AoE Lunar-Charged hit (+extra with thunderclouds).

Passive Talents

  • Whispering Flame (A1): +EM = 8% ATK (max 160). C4: 10% (max 220). Converts Electro-Charged to Lunar-Charged (+0.7% base DMG/100 ATK, max 14%).
  • Moonsign Benediction: +20% Lunar-Charged DMG (Ascendant Gleam). Party Moonsign buffs.
  • A Light in the Dark (A4): Mini-map Nod-Krai specialties.

Constellations

  • C1: Part the Veil of Snow - Spearstorm CD 4s. Party LC restores 8 Energy to Flins (5.5s CD).
  • C2: The Devil's Wall - Post-Spearstorm NA +50% ATK AoE LC. Ascendant Gleam -25% enemy Electro RES (7s).
  • C3: Burst +3 (15).
  • C4: Night on Bald Mountain - +20% ATK. Improves A1 EM.
  • C5: Skill +3 (15).
  • C6: +35% LC DMG. Party +10% LC DMG (Gleam).

Best Weapons

CRIT/ATK/ER for ATK-scaling and Burst uptime.
  1. Bloodsoaked Ruins (5★ Sig) - CRIT DMG, +36% LC DMG post-Burst, energy refund.
  2. Staff of the Scarlet Sands (5★) - CRIT Rate, EM-to-ATK.
  3. Primordial Jade Winged-Spear (5★) - CRIT Rate, ATK stacks.
  4. Deathmatch (4★) - CRIT Rate, ATK%.
  5. Prospector's Shovel (4★ Craftable) - ER, +48% EC/+12% LC DMG.
  6. Missive Windspear (4★ F2P) - +12% ATK/+48 EM post-reaction.
  7. The Catch (4★ Free) - ER, Burst DMG/CRIT.

~130-140% ER with Ineffa/C1.

Best Artifacts

ATK% focus for EM/passives. 6.4 meta favors Night set.

  • Night of the Sky's Unveiling (4pc) - 2pc: +80 EM. 4pc: +15-30% CRIT Rate (Moonsign), +10% Lunar DMG per effect.
  • Thundering Fury (4pc) - Reaction DMG/CD reduction.
  • Marechaussee Hunter (4pc) - With Furina (CRIT on HP drain).
  • 2pc ATK% + 2pc ATK% - Early game.

Main Stats:

  • Sands: ATK%
  • Goblet: ATK% (Lunar-Charged scales better)
  • Circlet: CRIT DMG/Rate (1:2)

Substats:

  1. ER (130-140% w/ Ineffa)
  2. CRIT Rate/DMG
  3. ATK% (2500+ goal)
  4. EM

Talent Priority

  1. Burst - Core Lunar-Charged DMG.
  2. Skill - Infusion/Spearstorm.
  3. NA - On-field time.

Best Team Compositions

Lunar-Charged w/ Hydro + Nod-Krai (Ineffa/Aino). 6.4 adds Varka options but Flins remains LC specialist.

  • Premium (Nod-Krai): Flins, Ineffa (Hydro/Sub-DPS/EM buff), Aino (Healer/Shielder), Sucrose (VV/EM).
  • F2P: Flins, Xingqiu/Yelan, Aino/Fischl (Battery), Sucrose/Kazuha.
  • Alt: Flins, Columbina (Hydro/Lunar buff), Ineffa, Lan Yan (VV/ATK).
  • Quick-Swap: Flins, Furina, Ineffa, Kazuha.

Playstyle Tips

  • Rotation: Supports (Hydro/VV) → Skill (Manifest) → Spearstorm → Thunderous Symphony → NAs → Repeat (~16-20s).
  • Focus: Frequent LC triggers, 2500+ ATK for EM cap, Moonsign stacks.
  • Energy: 130% ER ideal w/ Ineffa/C1. Fischl/Ororon battery.
  • C0 Solid; C1/C6 best.
  • Weakness: Hydro/Nod-Krai reliant.

Optimized for 6.4 meta with refined ER/ATK goals and LC focus.