| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| B | 
|
Seal Atk 1 | 40 | — | Inflicts Atk-3 on foe through its next action after combat. |
|
Seal Atk 2 | 80 | Seal Atk 1 | Inflicts Atk-5 on foe through its next action after combat. | |
|
Seal Atk 3 | 160 | Seal Atk 2 | Inflicts Atk-7 on foe through its next action after combat. | |
|
Seal Atk 4 | 300 | Seal Atk 3 | Inflicts Atk-4 on foe during combat, and if no effect neutralizes penalties to foe's Atk, inflicts penalty on foe's Atk during combat = 7 - current penalty on foe's Atk (min: 0). If penalty is active on foe's Atk, inflicts Special cooldown charge -1 on foe per attack during combat. (Only highest value applied. Does not stack.) Inflicts Atk-7 on foe through its next action after combat. | |
Cannot use: 
| |||||
Effects
| Effects | Targets | Conditions |
|---|---|---|
 Seal Atk 3 | ||
| Status effects | ||
 Atk-7 |  Foe | After combat |
 Seal Atk 4 | ||
| Status effects | ||
| Atk-7 | Foe | After combat |
| Combat effects | ||
 Atk-4 | Foe | — |
| Atk-X (min: 0) X = 7 - Penaltyon Foe's Atk | Foe doesn't neutralize Atk Penalties | |
 Special cooldown charge -1 | Penalty is active on Foe's Atk | |
Notes
- The Penalty is triggered regardless of whether Seal Atk's user performs an attack during combat. If foe initiates combat and user cannot counterattack, Seal Atk's Penalty will still trigger.
- Seal Atk's user needs to survive the combat for the Penalty to trigger.
- The stat decrease that can be applied by Seal Atk is considered a Penalty.
- Any 【Penalty】 on a unit lasts until that unit takes an action. If the unit takes multiple actions in a turn, they will only have Penalties for their first action.
- If the unit also has
Grand Strategy, any Penalties will remain active until the start of that unit's next phase.
- If the unit also has
- Any 【Penalty】 on a unit lasts until that unit takes an action. If the unit takes multiple actions in a turn, they will only have
- The stat decrease that can be applied by Seal Atk 4 is considered a temporary debuff.
- The "Special cooldown charge -X" effect will stack with the "Special cooldown charge +X" effect.
- For example, if a unit is affected by both Guard and
Special Cooldown Charge +1, the effects will stack and the cooldown will go down without penalty or bonus.
- For example, if a unit is affected by both
- If used alongside another source of "Special cooldown charge -X", only the higher of the two charge reductions will apply.
- This means that if a unit has two "Special cooldown charge -1" effects from two different sources, the battle will play out as if only one "Special cooldown charge -1" effect is active.
- Skills such as
Spd/Def Tempo 4 and 
Whirling Grace will neutralize effects that inflict "Special cooldown charge -X" on its user.
List of owners
| Unit | Skill chain | |||
|---|---|---|---|---|
 | Seal Atk 1 3  | Seal Atk 2 4  | Seal Atk 3 5  | – |
 | Seal Atk 1 3 | Seal Atk 2 3 | Seal Atk 3 4 | – |
 | Seal Atk 1 3 | Seal Atk 2 4 | Seal Atk 3 5 | – |
 | Seal Atk 1 3 | Seal Atk/Res 1 4 | Seal Atk/Res 2 5 | – |
 | Seal Atk 1 3 | Seal Atk 2 4 | Seal Atk 3 5 | – |
 | Seal Atk 1 5 | Seal Atk 2 5 | Seal Atk 3 5 | Seal Atk 4 5 |
 | Seal Atk 1 3 | Seal Atk/Def 1 4 | Seal Atk/Def 2 5 | – |
Availability
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2017-03-14 | 2017-03-30 | New Heroes: Blazing Shadows | Seal Atk 3 |
| 2017-08-15 | 2017-08-31 | New Heroes: The Sacred World | Seal Atk 1 |
| 2017-09-07 | 2017-09-13 | Focus: Ephraim and Eirika's Battle | Seal Atk 1 |
| 2017-12-02 | 2017-12-12 | Focus: Enduring Love, Block B | Seal Atk 3 |
| 2018-01-18 | 2018-02-07 | Focus: 4★ & 5★Heroes | Seal Atk 3 |
| 2018-03-03 | 2018-03-17 | Focus: 4★ & 5★Heroes | Seal Atk 3 |
| 2018-04-03 | 2018-04-17 | Focus: 4★ & 5★Heroes | Seal Atk 3 |
| 2018-12-13 | 2018-12-23 | Focus: New Power 2 | Seal Atk 3 |
| 2019-02-13 | 2019-02-23 | Focus: New Power 1 | Seal Atk 1 |
| 2019-06-27 | 2019-07-07 | Focus: Headband Brawl (Block B) | Seal Atk 3 |
| 2019-07-06 | 2019-07-14 | Focus: Marth and Caeda's Battle | Seal Atk 3 |
| 2019-08-31 | 2019-09-09 | Focus: Jeorge & Gordin's Battle | Seal Atk 3 |
| 2020-01-13 | 2020-01-22 | Focus: New Power | Seal Atk 3 |
| 2020-02-04 | 2020-02-05 | Focus: Ephraim and Eirika's Battle | Seal Atk 1 |
| 2020-08-09 | 2020-08-10 | Focus: Marth & Caeda's Battle | Seal Atk 3 |
| 2020-08-11 | 2020-08-12 | Focus: Jeorge & Gordin's Battle | Seal Atk 3 |
| 2021-01-08 | 2021-01-28 | New Heroes: Shared Purpose | Seal Atk 1 |
| 2021-04-16 | 2021-04-23 | Focus: Heroes with Gap Skills | Seal Atk 1 |
| 2021-09-27 | 2021-10-07 | Focus: Ace Archers Assemble | Seal Atk 3 |
| 2021-11-26 | 2021-12-08 | Focus: Palla and Catria's Battle | Seal Atk 3 |
| 2021-12-03 | 2021-12-09 | Focus: Heroes w/ Ardent Sacrifice | Seal Atk 1 |
| 2022-04-30 | 2022-05-10 | Focus: Chivalric Struggle 1 | Seal Atk 1 |
| 2022-08-06 | 2022-08-07 | Focus: Heroes with Gap Skills | Seal Atk 1 |
| 2023-02-28 | 2023-03-14 | Legendary Heroes - Robin | Seal Atk 4 |
| 2023-05-31 | 2023-06-14 | Legendary Heroes - Hinoka | Seal Atk 4 |
| 2023-07-24 | 2023-08-07 | Focus: Hall of Forms | Seal Atk 1 |
| 2023-08-31 | 2023-09-14 | Legendary Heroes - Alear | Seal Atk 4 |
| 2023-11-29 | 2023-12-15 | Focus: Double Mythic Heroes | Seal Atk 4 |
| 2024-02-02 | 2024-03-05 | Hero Fest | Seal Atk 4 |
| 2024-08-30 | 2024-09-13 | Legendary Heroes - Shez | Seal Atk 4 |
| 2025-01-28 | 2025-02-11 | Legendary Ayra & Mythic Athos | Seal Atk 4 |
| 2025-03-24 | 2025-04-14 | Focus: Hall of Forms | Seal Atk 4 |
| 2025-04-07 | 2025-04-24 | Focus: New Power | Seal Atk 1 |
Distributed units
- Mauvier: Penitent Knight (×1)
- Mauvier: Penitent Knight (×2)
- Use Heroic Grails (×20)
- Grand Hero Battles quest (March 2025) (×1)
- Grand Hero Party quest (August 2024) (×1)
- Pegasus Sisters quest (April 2017) (×1)
- Resplendent Hero (×1)
- Resplendent Hero (×1)
- Resplendent Hero (×1)
- Resplendent Hero (×1)
- Three Heroes quest (June 2021) (×1)
- Three Heroes quest (October 2019) (×1)
- Three Heroes quest (October 2022) (×1)
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2021-02-04T03:00:00Z | 2021-03-28T06:59:59Z | Seth: Silver Knight | Divine Code: Ephemera 2 |
| 2021-10-06T01:00:00Z | 2021-11-28T06:59:59Z | Miranda: Willful Princess | Divine Code: Ephemera 10 |
Seal acquired from
Tempest Trials reward
- Tempest Trials Mini: Stepping into the New Year ( – ): 6,000 Score.
Sacred Seal Forge
Seal Atk 1: Create for 20 
Great Scarlet Badge, 100 
Scarlet Badge, 20 
Sacred Coin.
Seal Atk 2: Enhance for 60 Great Scarlet Badge, 200 Scarlet Badge, 50 Sacred Coin.- Seal Atk 3: Enhance for 400 Great Scarlet Badge, 1000 Scarlet Badge, 100 Sacred Coin.
In other languages
| Language | Name |
|---|---|
| Japanese | 攻撃封じ |
| German | Angr. rauben |
| Spanish (Europe) | Sellar Ata |
| Spanish (Latin America) | Sellar Atq. |
| French | Sceau Atq |
| Italian | Sigilla Att |
| Traditional Chinese (Taiwan) | 攻擊封印 |
| Portuguese | Selo Atq. |