| Type | Icon | Name | SP | Required | Description 【Switch】
| |
|---|---|---|---|---|---|---|
| C | 
|
Deadly Miasma | 300 | Savage Blow 3 | If unit initiates combat, inflicts Atk/Spd/Def/Res-5 on foe and neutralizes foe's bonuses (from skills like Fortify, Rally, etc.) during combat, and after combat, deals 7 damage to target and foes within 2 spaces of target and applies【Divine Vein (Haze)】on target's space and on each space within 2 spaces of target's space for 1 turn. | If unit initiates combat, inflicts Atk/Spd/Def/Res-5 on foe and neutralizes foe's bonuses (from skills like Fortify, Rally, etc.) during combat, and after combat, deals 7 damage to target and foes within 2 spaces of target and applies【Divine Vein (Haze)】on target's space and on each space within 2 spaces of target's space for 1 turn. 【Divine Vein (Haze)】 Applies the following effects on space: Inflicts Atk/Spd/Def/Res-5 on foe and neutralizes foe's bonuses (from skills like Fortify, Rally, etc.) during combat. (Divine Vein effects do not stack; replaces any existing Divine Vein effect; Divine Vein effects applied simultaneously cancel each other out.) |
Cannot use:   
| ||||||
Effects[]
| Effects | Targets | Conditions |
|---|---|---|
| Map effects | ||
 Deals 7 damage |  Target &  Foeswithin 2 spaces of Target | After combat in Player Phase |
 【Divine Vein (Haze)】 | Spaces within 2 spaces of Target | |
| Combat effects | ||
 Atk/Spd/Def/Res-5 | Foe | Player Phase |
 Neutralizes Bonuses | ||
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.
- The stat reduction that can be applied during combat by Deadly Miasma is considered a temporary debuff.
- Deadly Miasma can neutralize
Bonuses during combat.
- Bonuses are neutralized by inflicting temporary debuffs of the same amount during combat.
- The Bonus neutralizing effect will be negated if the affected unit has Panic (and doesn't have Null Panic), or has their Bonuses removed by a source of Bonus effect neutralization.
- The effect is triggered regardless of whether Deadly Miasma's user performs an attack during combat. If foe initiates combat and user cannot counterattack, Deadly Miasma's effect will still trigger.
- Deadly Miasma's user needs to survive the combat for the effect to trigger.
- Deadly Miasma inflicts out of combat damage.
- Out of combat damage cannot reduce a unit's HP to 0.
- A foe equipped with Invincibility Seals will neutralize all sources of out of combat damage except from Røkkr area-of-effect Specials.
- A foe equipped with Røkkr or a unit with En Garde will neutralize all sources of out of combat damage except Area-of-effect Specials.
- 【Divine Vein (Haze)】 adds effects to spaces regardless of the terrain of those spaces.
- Divine Vein effects do not stack with each other. if a Divine Vein effect is applied to a space where another Divine Vein effect is active, the previous Divine Vein effect is overwritten.
- Divine Vein effects applied at the same time cancel each other out, leaving the overlapped spaces without a Divine Vein effect.
- Divine Vein effects do not apply to spaces with unbreakable walls, unbreakable structures, and other unbreakable terrain.
- The Atk/Spd/Def/Res-5 that can be applied during combat by 【Divine Vein (Haze)】 is considered a temporary debuff.
- 【Divine Vein (Haze)】 can neutralize Bonuses during combat.
- Bonuses are neutralized by inflicting temporary debuffs of the same amount during combat.
- The Bonus neutralizing effect will be negated if the affected unit has Panic (and doesn't have Null Panic), or has their Bonuses removed by a source of Bonus effect neutralization.
- Divine Vein effects do not stack with each other. if a Divine Vein effect is applied to a space where another Divine Vein effect is active, the previous Divine Vein effect is overwritten.
List of owners[]
| Unit | Skill chain | |||
|---|---|---|---|---|
 | Savage Blow 1 5  | Savage Blow 2 5 | Savage Blow 3 5 | Deadly Miasma 5 |
 | Savage Blow 1 5 | Savage Blow 2 5 | Savage Blow 3 5 | Deadly Miasma 5 |
 | Savage Blow 1 5 | Savage Blow 2 5 | Savage Blow 3 5 | Deadly Miasma 5 |
 | Savage Blow 1 5 | Savage Blow 2 5 | Savage Blow 3 5 | Deadly Miasma 5 |
 | Savage Blow 1 5 | Savage Blow 2 5 | Savage Blow 3 5 | Deadly Miasma 5 |
* Alfonse: Prince of Askr, Sharena: Princess of Askr, Anna: Commander, and Forma units cannot be used for skill inheritance or turned into combat manuals.
** Rearmed and Attuned Heroes cannot be used for normal skill inheritance or turned into combat manuals after using their Arcane/Elite Inheritance unless their Arcane/Elite Inheritance is restored via merges.
Alfonse: Prince of Askr, 
Sharena: Princess of Askr, 
Anna: Commander, and 
Forma units cannot be used for skill inheritance or turned into combat manuals.**
Rearmed and 
Attuned Heroes cannot be used for normal skill inheritance or turned into combat manuals after using their Arcane/Elite Inheritance unless their Arcane/Elite Inheritance is restored via merges.Availability[]
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2021-11-30 | 2021-12-14 | Legendary Eitri & Mythic Thórr | Deadly Miasma |
| 2022-01-28 | 2022-02-08 | Mythic Heroes - Elimine | Deadly Miasma |
| 2022-06-30 | 2022-07-14 | Legendary Heroes - Xander | Deadly Miasma |
| 2022-10-31 | 2022-11-14 | Mythic Heroes - Arval | Deadly Miasma |
| 2023-02-02 | 2023-03-02 | Hero Fest | Deadly Miasma |
| 2023-07-28 | 2023-08-11 | Mythic Heroes - Freyr | Deadly Miasma |
| 2023-10-31 | 2023-11-14 | Mythic Heroes - Veyle | Deadly Miasma |
| 2023-12-25 | 2024-01-08 | Camilla: Alluring Darkness | Deadly Miasma |
| 2024-02-19 | 2024-03-07 | Attuned Ivy & Rearmed Hortensia | Deadly Miasma |
| 2024-03-29 | 2024-04-12 | Emblem Heroes - Ike: Of Radiance | Deadly Miasma |
| 2024-04-30 | 2024-05-14 | Mythic Heroes - Loki | Deadly Miasma |
| 2024-06-12 | 2024-06-28 | Double AHR: Bottom Height | Deadly Miasma |
| 2024-06-28 | 2024-07-12 | Emblem Celica: Of Echoes | Deadly Miasma |
| 2024-07-26 | 2024-08-16 | Focus: Double Mythic Heroes | Deadly Miasma |
| 2024-08-12 | 2024-08-26 | Legendary & Mythic Hero Remix 2 | Deadly Miasma |
| 2024-09-09 | 2024-10-04 | Legendary & Mythic Hero Remix 1 | Deadly Miasma |
| 2024-10-28 | 2024-11-07 | Focus: Ivy & Hortensia's Battle | Deadly Miasma |
| 2024-11-08 | 2024-11-15 | Revival: Attuned Ivy, Rearmed Hortensia | Deadly Miasma |
| 2024-11-25 | 2024-12-09 | New Heroes Return | Deadly Miasma |
| 2024-11-29 | 2024-12-16 | Focus: Double Mythic Heroes | Deadly Miasma |
| 2025-01-13 | 2025-01-27 | Legendary & Mythic Hero Remix 2 | Deadly Miasma |
| 2025-02-02 | 2025-03-07 | Focus: Hero Fest | Deadly Miasma |
| 2025-04-28 | 2025-05-16 | Duo Marth & Mythic Elm: Year 35! | Deadly Miasma |
| 2025-05-26 | 2025-06-09 | New Heroes Return | Deadly Miasma |
| 2025-06-06 | 2025-06-30 | Attuned Tharja & Noire | Deadly Miasma |
| 2025-06-11 | 2025-06-16 | Revival: Att. Ivy & Rea. Hortensia | Deadly Miasma |
| 2025-06-27 | 2025-07-08 | Focus: My Sister Is the Best! | Deadly Miasma |
| 2025-06-30 | 2025-07-18 | Emblem Micaiah: Of Dawn | Deadly Miasma |
| 2025-08-15 | 2025-09-05 | New Heroes: Shining Resolve | Deadly Miasma |
| 2025-09-13 | 2025-09-27 | New Heroes Return | Deadly Miasma |
| 2025-09-30 | 2025-10-17 | Emblem Corrin & Mythic Lyn | Deadly Miasma |
| 2025-11-12 | 2025-11-26 | Legendary & Mythic Hero Remix 1 | Deadly Miasma |
| 2025-11-17 | 2025-12-05 | Focus: Double Mythic Heroes | Deadly Miasma |
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 | 死の瘴気 |
| German | Tödliches Miasma |
| Spanish (Europe) | Miasma mortal |
| Spanish (Latin America) | Miasma mortal |
| French | Miasme mortel |
| Italian | Miasma letale |
| Traditional Chinese (Taiwan) | 死之瘴氣 |
| Portuguese | Miasma letal |