| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
Heavy Blade 1 | 60 | — | If unit's Atk ≥ foe's Atk+5, grants Special cooldown charge +1 per unit's attack. (Only highest value applied. Does not stack.) |
|
Heavy Blade 2 | 120 | Heavy Blade 1 | If unit's Atk ≥ foe's Atk+3, grants Special cooldown charge +1 per unit's attack. (Only highest value applied. Does not stack.) | |
|
Heavy Blade 3 | 240 | Heavy Blade 2 | If unit's Atk > foe's Atk, grants Special cooldown charge +1 per unit's attack. (Only highest value applied. Does not stack.) | |
|
Heavy Blade 4 | 300 | Heavy Blade 3 | If unit's Atk > foe's Atk, grants Special cooldown charge +1 and deals +5 damage to foe per unit's attack. (Only highest value applied. Does not stack.) | |
Cannot use: 
| |||||
Available as a Sacred Seal.
Effects[ | ]
| Effects | Targets | Conditions |
|---|---|---|
 Heavy Blade 3 | ||
| Combat effects | ||
 Special cooldown charge +1per  Unit's attack | Unit | Unit's Atk > Foe's Atk |
 Heavy Blade 4 | ||
| Combat effects | ||
| Special cooldown charge +1 per Unit's attack | Unit | Unit's Atk > Foe's Atk |
 Boosts damage by 5 | ||
Notes[ | ]
- Only attacks performed by the user have the "Special cooldown charge +X" effect. This is true regardless of who initiated combat.
- 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. - The effects will only stack when the user attacks and the cooldown will go down without penalty or bonus.
- The "Special cooldown charge -X" effect will only take place when the foe attacks.
- 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 increases 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 Spendy Scimitar will neutralize effects that grant "Special cooldown charge +X" to the foe.
- The damage boosting effect is a flat +5 damage that ignores the foe's Def or Res when calculating the damage boost, and can be reduced by damage reduction effects such as Gust, Atk/Spd Excel, and Dodge.
- A foe equipped with
Embla's Ward, 
Múspellflame, 
Niðavellir Axiom, or Gold Perfection will neutralize all sources of damage during combat except the minimum 1 damage from Umbra Burst weapons. - For more information, see Damage calculation.
- A foe equipped with
List of owners[ | ]
| Unit | Skill chain | |||
|---|---|---|---|---|
 | Heavy Blade 1 5  | Heavy Blade 2 5 | Heavy Blade 3 5 | Heavy Blade 4 5 |
 | Heavy Blade 1 4  | Heavy Blade 2 4 | Heavy Blade 3 5 | – |
 | Heavy Blade 1 5 | Heavy Blade 2 5 | Heavy Blade 3 5 | – |
 | Heavy Blade 1 3  | Heavy Blade 2 4 | Heavy Blade 3 5 | – |
 | Heavy Blade 1 5 | Heavy Blade 2 5 | Heavy Blade 3 5 | Heavy Blade 4 5 |
Availability[ | ]
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2017-04-26 | 2017-05-15 | New Heroes: World of Radiance | Heavy Blade 3 |
| 2017-08-10 | 2017-08-18 | Hero Fest | Heavy Blade 3 |
| 2017-08-28 | 2017-09-06 | Focus: CYL Top 8 (Block A) | Heavy Blade 3 |
| 2017-09-19 | 2017-10-07 | Focus: Tempest Trials | Heavy Blade 3 |
| 2017-11-28 | 2017-12-04 | Legendary - Fjorm: Princess of Ice | Heavy Blade 3 |
| 2018-03-14 | 2018-03-21 | Focus: Countering Skills | Heavy Blade 3 |
| 2018-12-12 | 2018-12-20 | Focus: Ike & Soren's Battle | Heavy Blade 3 |
| 2019-02-09 | 2019-02-10 | Focus: Ike and Soren's Battle | Heavy Blade 3 |
| 2019-02-09 | 2019-02-20 | Focus: Tempest Trials | Heavy Blade 3 |
| 2019-04-25 | 2019-05-04 | Focus: Titania and Mist's Battle | Heavy Blade 3 |
| 2019-07-07 | 2019-07-14 | Focus: Weekly Revival 5 | Heavy Blade 3 |
| 2019-08-03 | 2019-08-04 | Focus: Countering Skills | Heavy Blade 3 |
| 2019-08-15 | 2019-08-27 | Focus: Tempest Trials | Heavy Blade 3 |
| 2019-11-07 | 2019-11-28 | New Heroes: Desert Mercenaries | Heavy Blade 4 |
| 2019-11-24 | 2019-12-01 | Focus: Weekly Revival 5 | Heavy Blade 3 |
| 2020-04-08 | 2020-05-01 | Free 5★ Hero: Fire Emblem Leads | Heavy Blade 3 |
| 2020-04-12 | 2020-04-17 | Focus: Weekly Revival 5 | Heavy Blade 3 |
| 2020-04-30 | 2020-05-07 | Legendary Heroes - Edelgard | Heavy Blade 4 |
| 2020-07-11 | 2020-07-19 | Focus: Desert Mercenaries | Heavy Blade 4 |
| 2020-08-02 | 2020-08-09 | Hero Fest | Heavy Blade 4 |
| 2020-08-02 | 2020-08-03 | Focus: Ike & Soren's Battle | Heavy Blade 3 |
| 2020-08-07 | 2020-09-07 | Pirate's Pride | Heavy Blade 4 |
| 2020-08-07 | 2020-08-08 | Focus: Titania & Mist's Battle | Heavy Blade 3 |
| 2020-10-04 | 2020-10-11 | Focus: Weekly Revival 10 | Heavy Blade 3 |
| 2021-02-02 | 2021-03-01 | Special Hero Summon (Year 4) | Heavy Blade 4 |
| 2021-02-05 | 2021-02-16 | Hero Fest | Heavy Blade 4 |
| 2021-04-13 | 2021-04-27 | Focus: Double Special Heroes | Heavy Blade 4 |
| 2021-05-09 | 2021-05-16 | Focus: Weekly Revival 10 | Heavy Blade 3 |
| 2021-05-11 | 2021-05-17 | Focus: New Power | Heavy Blade 3 |
| 2021-08-12 | 2021-08-26 | Pirate's Pride | Heavy Blade 4 |
| 2022-01-13 | 2022-01-27 | Legendary Hero Remix | Heavy Blade 4 |
| 2022-02-20 | 2022-02-27 | Focus: Weekly Revival 10 | Heavy Blade 3 |
| 2022-04-05 | 2022-04-17 | Focus: Tempest Trials | Heavy Blade 3 |
| 2022-06-26 | 2022-07-03 | Focus: Weekly Revival 10 | Heavy Blade 3 |
| 2022-08-14 | 2022-08-21 | Focus: Weekly Revival 55 | Heavy Blade 4 |
| 2022-08-26 | 2022-09-05 | Pirate's Pride | Heavy Blade 4 |
| 2022-12-04 | 2022-12-11 | Focus: Weekly Revival 63 | Heavy Blade 4 |
| 2022-12-09 | 2022-12-14 | Focus: New Power | Heavy Blade 4 |
| 2023-02-26 | 2023-03-05 | Focus: Weekly Revival 10 | Heavy Blade 3 |
| 2023-04-16 | 2023-04-23 | Focus: Weekly Revival 55 | Heavy Blade 4 |
| 2023-07-09 | 2023-07-16 | Focus: Weekly Revival 63 | Heavy Blade 4 |
| 2023-08-21 | 2023-08-31 | Pirate's Pride | Heavy Blade 4 |
| 2024-01-07 | 2024-01-14 | Focus: Weekly Revival 55 | Heavy Blade 4 |
| 2024-01-14 | 2024-01-21 | Focus: Weekly Revival 10 | Heavy Blade 3 |
| 2024-03-03 | 2024-03-10 | Focus: Weekly Revival 63 | Heavy Blade 4 |
| 2024-07-28 | 2024-08-04 | Focus: Weekly Revival 55 | Heavy Blade 4 |
| 2024-09-03 | 2024-09-13 | Pirate's Pride (4★SHSR) | Heavy Blade 4 |
| 2024-09-22 | 2024-09-29 | Focus: Weekly Revival 63 | Heavy Blade 4 |
Distributed units
- Jamke: Prince of Verdane (×1)
- Jamke: Prince of Verdane (×2)
- Tempest Trials+: Nihility & Dream 3 (×1)
- Tempest Trials+: Nihility & Dream 3 (×1)
- Use Heroic Grails (×20)
- Use Heroic Grails (×20)
- Grand Hero Battles quest (February 2019) (×1)
- Grand Hero Party quest (August 2019) (×1)
- Grand Hero Party quest (February 2022) (×1)
- Resplendent Hero (×1)
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2023-08-07T03:00:00Z | 2023-09-28T06:59:59Z | Tibarn: Shipless Pirate | Divine Code: Ephemera 8 |
| 2024-03-06T05:00:00Z | 2024-04-28T06:59:59Z | Fuga: Force of Gales | Divine Code: Ephemera 3 |
Seal acquired from[ | ]
Tempest Trials reward[ | ]
- Tempest Trials: A Gift of Peace ( – ): 40,000 Score.
Sacred Seal Forge[ | ]
- Heavy Blade 1: Create for 20 Great Scarlet Badge, 100 Scarlet Badge, 40 Sacred Coin.
- Heavy Blade 2: Enhance for 60 Great Scarlet Badge, 200 Scarlet Badge, 50 Sacred Coin.
- Heavy Blade 3: Enhance for 400 Great Scarlet Badge, 1000 Scarlet Badge, 100 Sacred Coin.
In other languages[ | ]
| Language | Name |
|---|---|
| Japanese | 剛剣 |
| German | Schwere Klinge |
| Spanish (Europe) | Sable pesado |
| Spanish (Latin America) | Sable pesado |
| French | Lame lourde |
| Italian | Lame grevi |
| Traditional Chinese (Taiwan) | 剛劍 |
| Portuguese | Espada maciça |