| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| B | 
|
Flow Feather 1 | 60 | — | If unit initiates combat and unit's HP = 100% at start of combat, neutralizes effects that prevent unit's follow-up attacks during combat, and also, if unit's Spd ≥ foe's Spd-10, deals damage during combat = 30% of difference between Res stats (unit's Res minus foe's Res) and reduces damage from foe's attacks by 30% of that difference. (Excluding area-of-effect Specials. Min: 0, max: 3.) |
 | Flow Feather 2 | 120 | Flow Feather 1 | If unit initiates combat and unit's HP ≥ 50% at start of combat, neutralizes effects that prevent unit's follow-up attacks during combat, and also, if unit's Spd ≥ foe's Spd-10, deals damage during combat = 50% of difference between Res stats (unit's Res minus foe's Res) and reduces damage from foe's attacks by 50% of that difference. (Excluding area-of-effect Specials. Min: 0, max: 5.) | |
 | Flow Feather 3 | 240 | Flow Feather 2 | If unit initiates combat, neutralizes effects that prevent unit's follow-up attacks during combat, and also, if unit's Spd ≥ foe's Spd-10, deals damage during combat = 70% of difference between Res stats (unit's Res minus foe's Res) and reduces damage from foe's attacks by 70% of that difference. (Excluding area-of-effect Specials. Min: 0, max: 7.) | |
Cannot use:                         | |||||
Notes
- "If unit initiates combat" means if the user starts combat during the player phase. The unit does not need to deal damage, nor be the first to attack.
- However, if the effect is applied after combat, the unit must also survive it to fulfill this condition.
- Flow Feather will not neutralize the additional follow-up of Potent Follow effects.
- Follow-up effects that are neutralized by Flow Feather:
- Effects active on the unit that prevent their follow-up attacks, such as
Windsweep 3, 
Watersweep 3, or 
Weaving Fighter. - Effects active on the foe that prevent the unit's follow-up attacks such as
Steady Impact, 
Vengeful Fighter 4, or 
Foe Cannot Follow-Up.
- Effects active on the unit that prevent their follow-up attacks, such as
- The damage boosting effect is a flat +0 to +7 damage that ignores the foe's Def or Res when calculating the damage boost, and can be reduced by damage reduction effects such as
Archrival, 
A/S Rival Break, and 
Dodge.
- Damage boosting effects stack additively, similar to flat damage-reduction effects and interactions related to the weapon-triangle, such as
Triangle Adept and the weapon-triangle advantage boost. - A foe equipped with Invincibility Seals will neutralize all sources of damage except from Røkkr area-of-effect Specials and the minimum 1 damage from Umbra Burst weapons.
- A foe using attack damage preventing effects can neutralize damage dealt from the foe's own attacks and the unit's attacks (Units with Umbra Burst weapons will take and deal the minimum 1 damage).
- For more information, see Damage calculation.
- Damage boosting effects stack additively, similar to flat damage-reduction effects and interactions related to the weapon-triangle, such as
- The flat damage-reduction effect is a flat -0 to -7 damage that is calculated after offensive Specials, damage boosting effects such as
Arcane Thorn and 
Change of Fate, and "reduces damage by X%" effects such as Archrival and Dodge.
- If a an effect such as Miracle or
Roy: Of Binding's boosted Special effect can trigger, the damage-reduction effect will not trigger and the user will still survive with only 1 HP. - Umbra Burst weapons will always deal a minimum of 1 damage even if the foe uses attack damage preventing effects, Invincibility Seals, or damage reduction effects.
- Flat damage-reduction effects stack additively, similar to damage boosting effects and interactions related to the weapon-triangle, such as Triangle Adept and the weapon-triangle advantage boost.
- Flat damage-reduction effects cannot be neutralized or reduced only during combat by effects such as
Share Spoils+ or 
Halves non-Special damage reduction. - For more information, see Damage calculation.
- If a an effect such as
List of owners
| Unit | Skill chain | ||
|---|---|---|---|
 | Flow Feather 1 4  SR | Flow Feather 2 4 SR | Flow Feather 3 4 SR |
Availability
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2022-07-19 | 2022-08-09 | Special Summon: Ymir & More | Flow Feather 3 |
| 2022-10-31 | 2022-11-14 | Mythic Heroes - Arval | Flow Feather 3 |
| 2023-01-21 | 2023-02-01 | Focus: Heroes with Iceberg | Flow Feather 3 |
| 2023-04-03 | 2023-04-11 | Special Revival: Ymir & More | Flow Feather 3 |
| 2023-05-15 | 2023-06-05 | Legendary & Mythic Hero Remix 2 | Flow Feather 3 |
| 2023-08-13 | 2023-08-16 | Special Revival: Ymir & More | Flow Feather 3 |
| 2023-11-25 | 2023-12-01 | Focus: Catria & Est's Battle | Flow Feather 3 |
| 2024-05-16 | 2024-05-28 | Focus: Heroes with Push Skills | Flow Feather 3 |
| 2024-07-22 | 2024-08-12 | Focus: Hall of Forms | Flow Feather 3 |
| 2024-08-11 | 2024-08-15 | Focus: Heroes with Push Skills | Flow Feather 3 |
| 2025-04-06 | 2025-04-13 | Focus: Weekly Revival 102 | Flow Feather 3 |
| 2025-05-03 | 2025-05-04 | 35th Anniversary: Daily Revival 102 | Flow Feather 3 |
| 2025-09-07 | 2025-09-14 | Focus: Weekly Revival 102 | Flow Feather 3 |
| 2025-12-21 | 2025-12-28 | Focus: Weekly Revival 102 | Flow Feather 3 |
Distributed units
- This skill is not available on any distributed units.
Combat Manuals
- This skill has not been available on any distributed Combat Manuals.
In other languages
| Language | Name |
|---|---|
| Japanese | 怒涛・天馬行空 |
| German | Gleitende Feder |
| Spanish (Europe) | Corriente pluma |
| Spanish (Latin America) | Corriente pluma |
| French | Flots Envol pég. |
| Italian | Penne fluide |
| Traditional Chinese (Taiwan) | 怒濤・天馬行空 |
| Portuguese | Onda pégaso |