Best Build for Collei in Genshin Impact

Collei is a 4-star Dendro

bow character in Genshin Impact. This guide covers the best builds, weapons and artifacts for Collei.

Pros & Cons
Skills
Passives
Constellations
Ascension

Pros & Cons

Free unit
Wide team choice and flexibility, gains value wherever reactions are used
Cheap to build, dedicated Dendro support
Not reliant on constellations

Needs investment to deal considerable DMG
Her flexibility implies different builds and stat requirements based on who she's played with

Skills

Supplicant's Bowmanship

Normal Attack

Normal Attack
Perform up to 4 consecutive shots with a bow.

Charged Attack
Performs a more precise Aimed Shot with increased DMG.
While aiming, Dendro energy will accumulate on the arrowhead. A fully charged arrow will deal Dendro DMG.

Plunging Attack
Fires off a shower of arrows in mid-air before falling and striking the ground, dealing AoE DMG upon impact.

Floral Brush

Elemental Skill

Throws out a Floral Ring that deals 1 instance of Dendro DMG to targets it comes into contact with.
The Floral Ring will return after a set time, dealing Dendro DMG once again.

Trump-Card Kitty

Elemental Burst

Trusty Cuilein-Anbar comes to save the day!
Throws the doll named Cuilein-Anbar, causing an explosion that deals AoE Dendro DMG, creating a Cuilein-Anbar Zone. Cuilein-Anbar will bounce around within this zone, dealing AoE Dendro DMG.

Passives

Gliding Champion of Sumeru

Utility Passive

Decreases gliding Stamina consumption for your own party members by 20%.
Not stackable with Passive Talents that provide the exact same effects.

Floral Sidewinder

Ascension 1

If one of your party members has triggered Burning, Quicken, Aggravate, Spread, Bloom, Hyperbloom, or Burgeon reactions before the Floral Ring returns, it will grant the character the Sprout effect upon return, which will continuously deal Dendro DMG equivalent to 40% of Collei's ATK to nearby opponents for 3s.
If another Sprout effect is triggered during its initial duration, the initial effect will be removed. DMG dealt by Sprout is considered Elemental Skill DMG.

The Languid Wood

Ascension 4

When a character within the Cuilein-Anbar Zone triggers Burning, Quicken, Aggravate, Spread, Bloom, Hyperbloom, or Burgeon reactions, the Zone's duration will be increased by 1s.
A single Trump-Card Kitty can be extended by up to 3s.

Constellations

Deepwood Patrol

Level 1

When in the party and not on the field, Collei's Energy Recharge is increased by 20%.

Through Hill and Copse

Level 2

The Passive Talent Floral Sidewinder is changed to this:
The Floral Ring will grant the character the Sprout effect from Floral Sidewinder upon return, dealing 40% of Collei's ATK as Dendro DMG to nearby opponents for 3s.
From the moment of using Floral Brush to the moment when this instance of Sprout effect ends, if any of your party members triggers Burning, Quicken, Aggravate, Spread, Bloom, Hyperbloom, or Burgeon reactions, the Sprout effect will be extended by 3s.
The Sprout effect can only be extended this way once. If another Sprout effect is triggered during its initial duration, the initial effect will be removed.
Requires you to have unlocked the Floral Sidewinder Passive Talent.

Scent of Summer

Level 3

Increases the Level of Floral Brush by 3.
Maximum upgrade level is 15.

Gift of the Woods

Level 4

Using Trump-Card Kitty will increase all nearby characters' Elemental Mastery by 60 for 12s (not including Collei herself).

All Embers

Level 5

Increases the Level of Trump-Card Kitty by 3.
Maximum upgrade level is 15.

Forest of Falling Arrows

Level 6

When the Floral Ring hits, it will create a miniature Cuilein-Anbar that will deal 200% of Collei's ATK as Dendro DMG.
Each Floral Brush can only create one such miniature Cuilein-Anbar.

Ascension

Rank	Level	Cost	Materials
1	20	20,000	1 Nagadus Emerald Sliver		3 Rukkhashava Mushrooms	3 Firm Arrowhead
2	40	40,000	3 Nagadus Emerald Fragment	2 Majestic Hooked Beak	10 Rukkhashava Mushrooms	15 Firm Arrowhead
3	50	60,000	6 Nagadus Emerald Fragment	4 Majestic Hooked Beak	20 Rukkhashava Mushrooms	12 Sharp Arrowhead
4	60	80,000	3 Nagadus Emerald Chunk	8 Majestic Hooked Beak	30 Rukkhashava Mushrooms	18 Sharp Arrowhead
5	70	100,000	6 Nagadus Emerald Chunk	12 Majestic Hooked Beak	45 Rukkhashava Mushrooms	12 Weathered Arrowhead
6	80	120,000	6 Nagadus Emerald Gemstone	20 Majestic Hooked Beak	60 Rukkhashava Mushrooms	24 Weathered Arrowhead

Show total costs

420,000

Mora

46

Majestic Hooked Beak

1

Nagadus Emerald Sliver

9

Nagadus Emerald Fragment

9

Nagadus Emerald Chunk

6

Nagadus Emerald Gemstone

168

Rukkhashava Mushrooms

18

Firm Arrowhead

30

Sharp Arrowhead

36

Weathered Arrowhead

Teams

For a detailed breakdown of the best Collei teams go to the Collei team guide page.

Builds

Enabler/Sub DPS Build

Collei is a reliable Dendro applicator and Sub DPS character whose utility is to support any Dendro-related team. This means both teams with a Dendro Main DPS and teams built around Dendro reactions (bloom, burning, quicken and derivates)
Both Collei's Skill and Burst work off field and apply a noticeable amount of Dendro Aura. It's important to keep her Burst up to trigger reactions and apply Dendro Consistently.
Collei isn't the best damage dealer ever but her contribution in DPS isn't negligible either! It's important to build her with the usual ADC (ATK/Damage%/Crit) setup. A EM build restricts her synergies to Bloom and Burning teams only, and the damage increase it gives is still subject of tests and what is known so far is that it isn't worth the investment.

Talent Priority

Burst > Skill
Collei's Burst is her main source of supportivity and damage. Her skill becomes extremely valuable with Constellation 2, but its damage isn't really a priority.

Stat Priority

Main stats: ATK or ER% / Dendro DMG / Crit
Sub stats: Crit>ER%>ATK>EM
At least 180% ER is needed when Collei is the only Dendro in a party. This requirement can be lowered to 150% with another Dendro character. For more ER requirement accuracy, please refer to a stat optimizer.

Weapons

Best weapon

Elegy for the End is by far Collei's best option: it helps with her ER requirements and gives valuable buffs to all party members. Its only downside is being an event-exclusive gacha weapon, and many other characters and teams profit from it.

Elegy for the End

Energy Recharge

The Parting Refrain

A part of the "Millennial Movement" that wanders amidst the winds.

Increases Elemental Mastery by 60~120. When the Elemental Skills or Elemental Bursts of the character wielding this weapon hit opponents, that character gains a Sigil of Remembrance. This effect can be triggered once every 0.2s and can be triggered even if said character is not on the field. When you possess 4 Sigils of Remembrance, all of them will be consumed and all nearby party members will obtain the "Millennial Movement: Farewell Song" effect for 12s. "Millennial Movement: Farewell Song" increases Elemental Mastery by 100~200 and increases ATK by 20~40%. Once this effect is triggered, you will not gain Sigils of Remembrance for 20s.

Of the many effects of the "Millennial Movement," buffs of the same type will not stack.

Best F2P and 4 star option, by sacrificing part of Collei's DPS it provides extra particles to the team and more Burst uptime.

Favonius Warbow

Energy Recharge

Windfall

CRIT hits have a 60~100% chance to generate a small amount of Elemental Particles, which will regenerate 6 Energy for the character. Can only occur once every 12~6s.

Weapon Variations

Great for Collei's self damage, most recommended in Bloom/Burning/Quickenteam comps.

The Stringless

Elemental Mastery

Arrowless Song

Increases Elemental Skill and Elemental Burst DMG by 24~48%.

ER% Stat sticks that also provide some extra damage and utility.

End of the Line

Energy Recharge

Net Snapper

Triggers the Flowrider effect after using an Elemental Skill, dealing 80% ATK as AoE DMG upon hitting an opponent with an attack. Flowrider will be removed after 15s or after causing 3 instances of AoE DMG. Only 1 instance of AoE DMG can be caused every 2s in this way. Flowrider can be triggered once every 12s.

Fading Twilight

Energy Recharge

Radiance of the Deeps

Has three states, Evengleam, Afterglow, and Dawnblaze, which increase DMG dealt by 6%/10%/14%~12%/20%/28% respectively. When attacks hit opponents, this weapon will switch to the next state. This weapon can change states once every 7s. The character equipping this weapon can still trigger the state switch while not on the field.

Sacrificial Bow

Energy Recharge

Composed

After dealing damage to an opponent with an Elemental Skill, the skill has a 40~80% chance to end its own CD. Can only occur once every 30~16s.

ATK stat stick that helps with Collei's personal damage.

Alley Hunter

ATK

Oppidan Ambush

While the character equipped with this weapon is in the party but not on the field, their DMG increases by 2~4% every second up to a max of 20~40%. When the character is on the field for more than 4s, the aforementioned DMG buff decreases by 4~8% per second until it reaches 0%.

Crit stat sticks

Not really worth on Collei but still deserving a mention.

Skyward Harp

CRIT Rate

Echoing Ballad

Increases CRIT DMG by 20~40%. Hits have a 60~100% chance to inflict a small AoE attack, dealing 125% Physical ATK DMG. Can only occur once every 4~2s.

Aqua Simulacra

CRIT DMG

The Cleansing Form

HP is increased by 16~32%. When there are opponents nearby, the DMG dealt by the wielder of this weapon is increased by 20~40%. This will take effect whether the character is on-field or not.

Polar Star

CRIT Rate

Daylight's Augury

Elemental Skill and Elemental Burst DMG increased by 12~24%. After a Normal Attack, Charged Attack, Elemental Skill or Elemental Burst hits an opponent, 1 stack of Ashen Nightstar will be gained for 12s. When 1/2/3/4 stacks of Ashen Nightstar are present, ATK is increased by 10/20/30/48~20/40/60/96%. The stack of Ashen Nightstar created by the Normal Attack, Charged Attack, Elemental Skill or Elemental Burst will be counted independently of the others.

The Viridescent Hunt

CRIT Rate

Verdant Wind

Upon hit, Normal and Aimed Shot Attacks have a 50% chance to generate a Cyclone, which will continuously attract surrounding opponents, dealing 40~80% of ATK as DMG to these opponents every 0.5s for 4s. This effect can only occur once every 14~10s.

Slingshot

CRIT Rate

Slingshot

If a Normal or Charged Attack hits a target within 0.3s of being fired, increases DMG by 36~60%. Otherwise, decreases DMG by 10%.

Artifacts

Best sets

Best set if Collei is used alongside a Dendro Main DPS character.

Deepwood Memories

2 Dendro DMG Bonus +15%.

4 After Elemental Skills or Bursts hit opponents, the targets' Dendro RES will be decreased by 30% for 8s. This effect can be triggered even if the equipping character is not on the field.

Universal buff and relatively easy to farm, but remember that only one Noblesse user may be used in a team (buff doesn't stack)

Noblesse Oblige

2 Elemental Burst DMG +20%.

4 Using an Elemental Burst increases all party members' ATK by 20% for 12s. This effect cannot stack.

Excellent utility and free EM for the team, but it's sadly only available as a 4 star. Very valuable in early game though.

Instructor

2 Increases Elemental Mastery by 80.

4 Upon triggering an Elemental Reaction, increases all party members' Elemental Mastery by 120 for 8s.

Artifact Variations

Universal set that works in any team comp, it increases Collei's DPS as well as her reactions'

Gilded Dreams

2 Elemental Mastery +80.

4 Within 8s of triggering an Elemental Reaction, the character equipping this will obtain buffs based on the Elemental Type of the other party members, ATK is increased by 14% for each party member whose Elemental Type is the same as the equipping character, and Elemental Mastery is increased by 50 for every party member with a different Elemental Type. Each of the aforementioned buffs will count up to 3 characters. This effect can be triggered once every 8s. The character who equips this can still trigger its effects when not on the field.

Niche set but Collei can provide 6-9s buff uptime (9-12s if C2+)

Tenacity of the Millelith

2 HP +20%.

4 When an Elemental Skill hits an opponent, the ATK of all nearby party members is increased by 20% and their Shield Strength is increased by 30% for 3s. This effect can be triggered once every 0.5s. This effect can still be triggered even when the character who is using this artifact set is not on the field.

Any Combination

Easiest way to find balanced stats... in exchange of support potential.

Deepwood Memories

2 Dendro DMG Bonus +15%.

Noblesse Oblige

2 Elemental Burst DMG +20%.

Gilded Dreams

2 Elemental Mastery +80.