| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| C | 
|
Blue Feud 1 | 60 | — | During combat, disables skills of all blue foes, excluding foe in combat. If in combat against a blue foe, disables skills of all foes, excluding foe in combat. |
|
Blue Feud 2 | 120 | Blue Feud 1 | During combat, disables skills of all blue foes, excluding foe in combat. If in combat against a blue foe, disables skills of all foes, excluding foe in combat, and inflicts Atk/Spd/Def/Res-2 on foe during combat. | |
|
Blue Feud 3 | 240 | Blue Feud 2 | During combat, disables skills of all blue foes, excluding foe in combat. If in combat against a blue foe, disables skills of all foes, excluding foe in combat, and inflicts Atk/Spd/Def/Res-4 on foe during combat. | |
Cannot use:      
| |||||
Notes[ | ]
- Blue refers to
. - The stat decrease that can be applied by Blue Feud is considered a temporary debuff.
- The ally combat effect neutralization of Blue Feud only activates during combat involving the unit. It has no effect if the unit is neither the attacker nor the defender of the combat.
- The ally combat effect neutralization of Blue Feud does not prevent 【Savior】 from being triggered, because 【Savior】 is not a during combat effect.
- The ally combat effect neutralization of Blue Feud does not neutralize effects granted to support partners during combat such as Renewed Fang and Dragon Blast.
List of owners[ | ]
| Unit | Skill chain | ||
|---|---|---|---|
 | Blue Feud 1 5  | Blue Feud 2 5 | Blue Feud 3 5 |
 | Blue Feud 1 5 | Blue Feud 2 5 | Blue Feud 3 5 |
 | Blue Feud 1 5 | Blue Feud 2 5 | Blue Feud 3 5 |
 | Blue Feud 1 5 | Blue Feud 2 5 | Blue Feud 3 5 |
Availability[ | ]
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2020-02-27 | 2020-03-05 | Legendary Heroes - Chrom | Blue Feud 3 |
| 2020-06-30 | 2020-07-07 | Legendary Heroes - Seliph | Blue Feud 3 |
| 2020-10-30 | 2020-11-06 | Legendary Heroes - Dimitri | Blue Feud 3 |
| 2021-04-28 | 2021-05-07 | Legendary Heroes - Sigurd | Blue Feud 3 |
| 2021-09-30 | 2021-10-07 | Mythic Heroes - Ótr | Blue Feud 3 |
| 2022-03-31 | 2022-04-14 | Legendary Heroes - Nanna | Blue Feud 3 |
| 2022-04-18 | 2022-05-10 | New Heroes & Ascended Ishtar | Blue Feud 3 |
| 2022-07-18 | 2022-08-01 | Focus: Heroes with Null Skills | Blue Feud 3 |
| 2022-08-09 | 2022-09-09 | Risk and Reward | Blue Feud 3 |
| 2022-09-29 | 2022-10-13 | Legendary Heroes - Ninian | Blue Feud 3 |
| 2022-10-31 | 2022-11-14 | Mythic Heroes - Arval | Blue Feud 3 |
| 2022-12-20 | 2023-01-03 | Focus: Double Special Heroes | Blue Feud 3 |
| 2022-12-23 | 2023-01-10 | Legendary Heroes - Shez | Blue Feud 3 |
| 2022-12-26 | 2023-01-05 | Focus: Heroes with Fury | Blue Feud 3 |
| 2023-02-02 | 2023-03-02 | Special Hero Summon | Blue Feud 3 |
| 2023-02-11 | 2023-02-25 | Legendary & Mythic Hero Remix 1 | Blue Feud 3 |
| 2023-03-31 | 2023-04-14 | Legendary Heroes - Yuri | Blue Feud 3 |
| 2023-04-20 | 2023-05-01 | Focus: Heroes w/Draconic Aura | Blue Feud 3 |
| 2023-06-23 | 2023-07-14 | Focus: Hall of Forms | Blue Feud 3 |
| 2023-07-13 | 2023-07-27 | Legendary & Mythic Hero Remix 1 | Blue Feud 3 |
| 2023-08-10 | 2023-08-13 | Revival: Ascended Ishtar | Blue Feud 3 |
| 2023-08-14 | 2023-08-24 | Risk and Reward | Blue Feud 3 |
| 2023-08-31 | 2023-09-14 | Legendary Heroes - Alear | Blue Feud 3 |
| 2023-10-30 | 2023-11-08 | Focus: Arthur & Tine's Battle | Blue Feud 3 |
| 2024-01-14 | 2024-01-28 | Legendary & Mythic Hero Remix 1 | Blue Feud 3 |
| 2024-02-29 | 2024-03-14 | Legendary Heroes - Alear | Blue Feud 3 |
| 2024-05-14 | 2024-06-04 | Legendary & Mythic Hero Remix 1 | Blue Feud 3 |
| 2024-08-02 | 2024-08-06 | Focus: Heroes with Null Skills | Blue Feud 3 |
| 2024-08-21 | 2024-08-31 | Risk and Reward | Blue Feud 3 |
Distributed units
- This skill is not available on any distributed units.
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2023-03-06T03:00:00Z | Tine: Rumbling Thunder | Divine Code: Part 4 | |
| 2024-08-06T05:00:00Z | 2024-09-28T06:59:59Z | Cath: Caper Captain | Divine Code: Ephemera 8 |
In other languages[ | ]
| Language | Name |
|---|---|
| Japanese | 青への暗闘 |
| German | Blaue Fehde |
| Spanish (Europe) | Pugna azul |
| Spanish (Latin America) | Pugna azul |
| French | Querelle bleue |
| Italian | Faida blu |
| Traditional Chinese (Taiwan) | 對青的暗鬥 |
| Portuguese | Rixa azul |