Collei
Who is Collei?
Collei is a 4★ Dendro Bow Sub-DPS from Sumeru, a Trainee Forest Ranger of the Avidya Forest. Rated B-tier Sub-DPS, she is the most accessible off-field Dendro unit in the game — obtainable free from the Sumeru TCG event — and provides consistent Dendro application for Bloom, Burgeon, Quicken, and Aggravate teams. Her passive extends her Burst duration when Dendro reactions are triggered, and her C2 significantly improves her off-field uptime. Source: https://game8.co/games/Genshin-Impact/archives/382079
Kit Summary
Bow attacks; rarely used.
Throws a Floral Ring boomerang dealing Dendro DMG on the way out and back; if a Dendro reaction was triggered by the party before it returns, Collei gains the Sprout effect for 3s of extra Dendro DMG.
Deploys Cuilein-Anbar (her stuffed bear) for 6s+ of AoE Dendro pulses; duration extends by 1s per Dendro reaction triggered (max +3s).
Build Guide
🔮 Best Relic / Echo Set
4pc Deepwood Memories (best — reduces enemy Dendro RES by 30% after Skill/Burst hits; she should hold this if no one else does). Alternative: 4pc Emblem of Severed Fate (ER → Burst DMG). Support: 4pc Noblesse Oblige.
⚔ Best Light Cone / Weapon
Polar Star (5★ — CRIT Rate). Aqua Simulacra (5★ — CRIT DMG). Best F2P: Favonius Warbow (4★ — ER 61.3%, 60% chance of energy particles on CRIT); Prototype Crescent (craftable). Source: Game8.
📊 Substats Priority
👥 Best Teams
Quicken: Tighnari + Collei + Fischl + Kuki Shinobu
Burgeon: Tartaglia + Collei + Dendro Traveler + Thoma
Budget Bloom: Barbara + Collei + Dendro Traveler + Kaeya
F2P Verdict
Free from the 3.0 Sumeru Archon Quest event — no pulling required.
Favonius Warbow covers her ER needs and generates particles for teammates.
She should hold 4pc Deepwood Memories if no other unit in the team carries it — the Dendro RES shred benefits the whole team.
Build ~170% ER to keep Trump-Card Kitty on cooldown off-field without Raiden support.
C2 significantly extends her off-field Dendro window; worth targeting on banners. Source: https://game8.co/games/Genshin-Impact/archives/382079
Frequently Asked Questions
Is Collei a good substitute for Nahida?
Yes for F2P players — she provides reliable off-field Dendro application for Bloom, Burgeon, Quicken, and Aggravate. She is outclassed by Nahida and Tighnari but is free and fully functional. Source: Game8.
What does Collei's C2 do?
C2 reworks her Sprout passive so it triggers again when the party causes Burning, Quicken, Aggravate, Spread, Bloom, Burgeon, or Hyperbloom during Floral Ring's return flight — significantly extending her off-field Dendro output. Source: Game8.
Should Collei hold Deepwood Memories?
Yes, if no other party member holds 4pc Deepwood Memories. The 30% Dendro RES reduction is a major team DPS increase and Collei's personal damage loss from not running Emblem is small. Source: Game8.
What ER does Collei need?
Around 170% to use her Burst off cooldown in most compositions. Favonius Warbow or an ER Sands help reach this. Source: Game8.