Whitelake Frostfeather is a 5-star sword built around one very specific payoff. Its passive, Snow Swan’s Finale, layers attack buffs onto anyone who lands an Elemental Skill, then hands out a big Stellar Glimmer Crit DMG bonus and free Elemental Energy once those stacks are maxed. That second half only matters if your team can trigger Stellar Glimmer at all, which is what separates the sword’s true owners from the characters just borrowing its stat line.
Quick answer: Odette gets the most out of Whitelake Frostfeather. Cryo Traveler is the closest alternative, and on anyone else it works as a Crit Rate and attack stat stick, provided their Elemental Skill actually hits enemies to build the three stacks.
Best characters for Whitelake Frostfeather
Two groups matter here. The first can use every line of the passive, including the Stellar Glimmer Crit DMG and the energy refund. The second only cares about the 674 base attack, the 22.1% Crit Rate, and the stacking attack buff.
| Character | How much of the sword they use |
|---|---|
| Odette | All of it. This is her signature weapon, and her kit lines up with the attack buff, the Crit Rate, and the Stellar Glimmer Crit DMG bonus. |
| Cryo Traveler | All of it. The strongest home for the sword if Exaiphanes Blade is already committed elsewhere. |
| Qiqi | All of it, but only when paired with a character who enables Stellar Glimmer reactions. |
| Clorinde | Stats plus the attack stacks. Her Skill hits enemies, so she reaches three stacks on her own. The Stellar Glimmer half goes unused. |
| Alhaitham | Same as Clorinde. His Skill triggers the stacks, and the reaction bonus does nothing for him. |
| Kaedehara Kazuha | Situational. Worth it only in a Stellar Swirl team. In anything else, Freedom-Sworn, Xiphos’ Moonlight, or Favonius Sword do more. |
| Kamisato Ayato, Keqing, Kamisato Ayaka | Stats only. A clean Crit Rate and attack boost with no reaction synergy. |
Odette does not require it, though. Finale of the Deep, Exaiphanes Blade, and Emberwell all cover her well enough that skipping the weapon banner is a reasonable call.
How Snow Swan’s Finale stacks
Hitting an opponent with your Elemental Skill grants a stack of “Lake-Hued Lament,” which raises attack by 8% for eight seconds at R1. The effect can trigger once every 0.1 seconds and caps at three stacks, with each stack timing out on its own schedule.
Reaching three stacks is the gate for everything else. At that point, Stellar Glimmer reaction damage from the equipping character gains 50% Crit DMG, and triggering a Stellar Glimmer reaction (or dealing Stellar Glimmer reaction damage) restores four Elemental Energy on a 3.5-second cooldown. Both effects keep working while the character sits off-field.
Note: if a character’s Elemental Skill places a field or summon that does not directly hit an enemy, the stacks never build, and the Stellar Glimmer bonus stays switched off no matter what the rest of your team is reacting with.
Refinement values from R1 to R5
Every refinement scales the three moving parts of the passive. The stack limit, the duration, and both cooldowns stay identical at all ranks.
| Refinement | ATK per stack | Stellar Glimmer Crit DMG | Energy restored |
|---|---|---|---|
| R1 | 8% | 50% | 4 |
| R2 | 10% | 65% | 4.5 |
| R3 | 12% | 80% | 5 |
| R4 | 14% | 95% | 5.5 |
| R5 | 16% | 110% | 6 |
Pushing past R1 means pulling four more copies on the weapon banner, so most players will live with the base numbers.
Base attack and Crit Rate at every level
| Level | Base attack | Crit Rate |
|---|---|---|
| 1 | 48 | 4.8% |
| 20 | 133 | 8.5% |
| 40 | 261 | 12.4% |
| 50 | 341 | 14.3% |
| 60 | 423 | 16.2% |
| 70 | 506 | 18.2% |
| 80 | 590 | 20.1% |
| 90 | 674 | 22.1% |
Ascension materials and Mora costs
Each ascension pulls from three families of materials, and the Chimeric line comes from Level 60+ Defeated Concilium enemies.
| Level | Materials | Mora |
|---|---|---|
| 20 | 3 Chimeric Core, 5 Hollow Root of Life, 5 Measured Pour of the Cellared Spiritual Nectar | 10,000 |
| 40 | 12 Chimeric Core, 18 Hollow Root of Life, 5 Intoxication of the Cellared Spiritual Nectar | 20,000 |
| 50 | 9 Symbiotic Chimeric Nucleus, 9 Sprout Node of Life, 9 Intoxication of the Cellared Spiritual Nectar | 30,000 |
| 60 | 14 Symbiotic Chimeric Nucleus, 18 Sprout Node of Life, 5 Exhilaration of the Cellared Spiritual Nectar | 45,000 |
| 70 | 9 Prime Chimeric Nexus, 14 Coiled Core of Life, 9 Exhilaration of the Cellared Spiritual Nectar | 55,000 |
| 80 | 18 Prime Chimeric Nexus, 27 Coiled Core of Life, 6 Revelry of the Cellared Spiritual Nectar | 65,000 |
Total cost to reach level 90
| Material | Quantity |
|---|---|
| Chimeric Core | 15 |
| Symbiotic Chimeric Nucleus | 23 |
| Prime Chimeric Nexus | 27 |
| Hollow Root of Life | 23 |
| Sprout Node of Life | 27 |
| Coiled Core of Life | 41 |
| Measured Pour of the Cellared Spiritual Nectar | 5 |
| Intoxication of the Cellared Spiritual Nectar | 14 |
| Exhilaration of the Cellared Spiritual Nectar | 14 |
| Revelry of the Cellared Spiritual Nectar | 6 |
| Mora | 225,000 |
How to get Whitelake Frostfeather
Whitelake Frostfeather is exclusive to the Epitome Invocation weapon banner, and it arrived in Version 7.0 alongside Odette. There is no craftable, event, or shop route to it. The current featured run started on August 12th, 2026 and ends on September 1st, 2026, with Crimson Moon’s Semblance sharing the rate-up.
The weapon is worth the pull if you are building around Stellar Glimmer and want that reaction Crit DMG plus the energy refund. If you are only after the Crit Rate and attack, plenty of characters will take it happily, but they will be running half a weapon.
