Windsong
6★

Windsong

Star 6★ Arcanist
About Windsong

Windsong is a 6★ Star Arcanist in Reverse: 1999. Below are the exact Insight materials needed to ascend them, plus other Star Arcanists to build alongside.

Data updated: 2026-07-11

Windsong — Review & Analysis

Windsong
Windsong is a single-target Star (6★) DPS built entirely around crit stacking: every point of overflow Moxie and every ally crit converts into a [Scale] stack that raises both Crit Rate and Crit DMG (up to 15 stacks). Her Incantation I turns overflow Crit Rate into Crit DMG so no crit stat is ever wasted, while her Ultimate opens a burst window by re-casting Incantation I as many times as possible. She is a self-sufficient crit carry who scales harder the longer a fight runs.
Strengths
  • Self-fuels her own crit: [Scale] (up to 15 stacks) plus Insight III's +10% Crit Rate & Crit DMG on entry mean she barely needs an external crit buffer.
  • Incantation I converts overflow Crit Rate into Crit DMG — no wasted stats, rewarding heavy crit stacking.
  • The Ultimate enters [Surveying] with no Moxie loss and re-casts Incantation I, creating a huge single-target burst window; [Obscurity] also shreds enemy Crit Resistance for the whole team.
Weaknesses
  • Star afflatus is countered by Plant (takes +30% DMG / weaker against Plant), so watch out for Plant-heavy lineups.
  • She needs time to stack [Scale] and Moxie before erupting, so short fights or the opening rounds see modest output.
Build Priority

Level the Ultimate first to maximize the chained burst window, then Incantation I as the main single-target crit hit. Since she generates plenty of Crit Rate herself, pick Psychubes leaning toward Crit DMG / single-target damage amplification to cash in on the overflow-Crit-Rate-to-Crit-DMG conversion; pair her with crit-happy allies to feed extra [Scale] stacks.

Overview

Rarity
6★
Afflatus
Star
Birthday
October 13
Official Names
JA: スヴィスティKO: 윈드송ZH-TW: 北方哨歌
Afflatus Matchups
↑ Strong against
Mineral
↓ Weak to
Plant

Base Stats (max level)

Stats at Insight III, max level — from datamined values.
HP6,270
ATK1,143
Reality DEF492
Mental DEF492
Crit Rate17.8%
Crit DMG156.8%
Stats across Insight milestones
Base Stats (max level) Lv.1Lv.30Insight 1 · Lv.40Insight 2 · Lv.50Insight 3 · Lv.60
HP 1,4042,1323,5725,3296,270
ATK 2563896529721,143
Reality DEF 111168281419492
Mental DEF 111168281419492
Crit Rate 12.7%12.7%14.4%16.1%17.8%
Crit DMG 149.1%149.1%151.6%154.2%156.8%

Windsong — Skills & Incantations

Full skill kit with values per upgrade tier.
Incantation I — Thus It Is Proven Incantation

“Insight II: 1-target attack. Gains Eureka +1 and deals 450% Mental DMG. Spend 2 Eureka to deal Mental DMG +150% and convert excess Critical Rate to Critical DMG for this attack.”

Insight 0: 1-target attack. Gains Eureka +1 and deals 180% Mental DMG. Spend 2 Eureka to deal Mental DMG +60% and convert excess Critical Rate to Critical DMG for this attack.
Insight I: 1-target attack. Gains Eureka +1 and deals 270% Mental DMG. Spend 2 Eureka to deal Mental DMG +90% and convert excess Critical Rate to Critical DMG for this attack.
Insight II: 1-target attack. Gains Eureka +1 and deals 450% Mental DMG. Spend 2 Eureka to deal Mental DMG +150% and convert excess Critical Rate to Critical DMG for this attack.
Incantation II — Pragmatism Incantation

“Insight II: Mass attack. Gains Eureka +1 and deals 285% Mental DMG to 2 enemies; gains 3 stacks of 【Preparation - Windsong】.”

Insight 0: Mass attack. Gains Eureka +1 and deals 110% Mental DMG to 2 enemies; gains 1 stack of Preparation - Windsong.
Insight I: Mass attack. Gains Eureka +1 and deals 165% Mental DMG to 2 enemies; gains 2 stacks of Preparation - Windsong.
Insight II: Mass attack. Gains Eureka +1 and deals 285% Mental DMG to 2 enemies; gains 3 stacks of Preparation - Windsong.
Ultimate — An Even Longer While Ultimate

“Insight I: 1-target debuff. Inflicts 1 stack of 【Confusion】 on the target for 1 round; then enters the 【Mapping】 status for the round, gains Eureka +5, converts all own incantations to 【Rehabilitation】 of their matching rank, and casts them all if able.”

Insight 0: 1-target debuff. Inflicts 1 stack of Confusion on the target for 1 round; then enters the Mapping status for the round, gains Eureka +2, converts all own incantations to Rehabilitation of their matching rank, and casts them all if able.
Insight I: 1-target debuff. Inflicts 1 stack of Confusion on the target for 1 round; then enters the Mapping status for the round, gains Eureka +5, converts all own incantations to Rehabilitation of their matching rank, and casts them all if able.
Insight Legacy Incantation

“Insight III: When entering battle, gain Critical Rate +10% and Critical DMG +10%. After casting an Ultimate, gain 1 stack of 【Preparation - Windsong】.”

Insight I: Whenever an ally scores a critical hit with an incantation or an enemy gets a stack of Confusion, grant 1 stack of Measure to self.
Insight II: Critical Rate +10% when entering battle.
Insight III: When entering battle, gain Critical Rate +10% and Critical DMG +10%. After casting an Ultimate, gain 1 stack of Preparation - Windsong.

Skill Quotes

Official flavor quotes tied to each of Windsong's skill ranks, sourced directly from the game.

“Repeated measurements and calculations.”

— Rehabilitation

“Repeated measurements and calculations. All in pursuit of her dream.”

— Rehabilitation

“Repeated measurements and calculations. All in pursuit of her dream and the ultimate truth.”

— Rehabilitation

“To depict a mountain.”

— Practicability

“To depict a mountain with dirt, foliage, sky, and music ...”

— Practicability

“To depict a mountain with dirt, foliage, sky, and music ... that requires a different cost, my friend.”

— Practicability

“She traveled across the valley, through the rainforest, and over the snowfield. It's been a lonely journey.”

— Long Long Journey

Insight Materials

Exact materials to raise this Arcanist's Insight level.
Insight 1
Sharpodonty × 18,000
Page of Starlit Ascent · +38 other characters also need this × 6
Spell of Banishing · +56 other characters also need this × 6
Perpetual Cog · +36 other characters also need this × 5
Insight 2
Sharpodonty × 40,000
Scroll of Starlit Ascent · +38 other characters also need this × 10
Liquefied Terror · +96 other characters also need this × 5
Holy Silver · +121 other characters also need this × 5
Insight 3
Sharpodonty × 200,000
Tome of Starlit Ascent · +27 other characters also need this × 16
Glowing Mothwing · +27 other characters also need this × 6
Mistilteinn · +65 other characters also need this × 3

Resonance Materials

Materials to build out the Resonance tuning grid.
All 14 Resonance levels
Resonance 2
Moment of Dissonance · +128 other characters also need this × 5
Resonance 3
Moment of Dissonance · +128 other characters also need this × 5
Spell of Banishing · +56 other characters also need this × 6
Resonance 4
Moment of Dissonance · +128 other characters also need this × 5
Silver Ore · +66 other characters also need this × 4
Solidus · +128 other characters also need this × 3
Resonance 5
Brief Cacophony · +128 other characters also need this × 5
Milled Magnesia · +70 other characters also need this × 3
Liquefied Terror · +96 other characters also need this × 3
Resonance 6
Sharpodonty × 30,000
Brief Cacophony · +128 other characters also need this × 5
Clawed Pendulum · +84 other characters also need this × 3
Resonance 7
Brief Cacophony · +128 other characters also need this × 6
Winged Key · +54 other characters also need this × 5
Resonance 8
Brief Cacophony · +128 other characters also need this × 6
Goose Neck · +53 other characters also need this × 4
Esoteric Bones · +92 other characters also need this × 6
Resonance 9
Brief Cacophony · +128 other characters also need this × 8
Biting Box · +126 other characters also need this × 4
Spell of Fortune · +85 other characters also need this × 6
Resonance 10
Sinuous Howl · +45 other characters also need this × 1
Sonorous Knell · +128 other characters also need this × 5
Holy Silver · +121 other characters also need this × 6
Bifurcated Skeleton · +117 other characters also need this × 8
Resonance 11
Sinuous Howl · +45 other characters also need this × 1
Sharpodonty × 120,000
Sonorous Knell · +128 other characters also need this × 5
Platinum Ouija · +59 other characters also need this × 4
Resonance 12
Sinuous Howl · +45 other characters also need this × 1
Sonorous Knell · +128 other characters also need this × 6
Watch Core · +38 other characters also need this × 4
Prophetic Bird · +111 other characters also need this × 5
Resonance 13
Sinuous Howl · +45 other characters also need this × 1
Sonorous Knell · +128 other characters also need this × 6
Murmur of Insanity · +59 other characters also need this × 5
Holy Silver · +121 other characters also need this × 5
Resonance 14
Sinuous Howl · +45 other characters also need this × 1
Sonorous Knell · +128 other characters also need this × 8
Fruit of Good and Evil · +63 other characters also need this × 2
Bogeyman · +75 other characters also need this × 4
Resonance 15
Sinuous Howl · +45 other characters also need this × 1
Sonorous Knell · +128 other characters also need this × 8
Golden Fleece · +55 other characters also need this × 3
Wyrmling Skeleton · +71 other characters also need this × 4

Recommended Psychubes

Psychubes recommended to equip on Windsong, based on community builds.

Where to Get

Featured in 4 banner(s).
Ripples S02 · Special Banner · vS02 2026-07-23
Boon of the Water 3.2 · Special Banner · v3.2 2026-01-20
The Intersecting Lines · Pickup Banner · v3.1 2025-12-30
Covenant of the Water — Golden Skein I · Special Banner · v3.1 2025-12-20

Where to Get →

Teams with Windsong

Confusion Chaos · Confusion

Windsong, Blonney and Kanjira all carry the Confusion tag — stacking Confusion on the same enemy makes it more likely to attack its own side, effectively removing it from the fight without needing to burst it down. La Source keeps everyone alive with Moxie + Heal while the debuff resolves. None of the four needs a Euphoria.

Teams →
Confusion Crit Echo · Confusion

Tooth Fairy, Matilda and Voyager all tap into Confusion together with Crit — combining it across three kits at once outperforms any single carry doing it alone. Name Day keeps the line-up alive with Heal so that payoff has time to land.

Teams →

Where to next

More Star Arcanists

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