| Type | Icon | Name | SP | Required | Description 【Switch】
| |
|---|---|---|---|---|---|---|
| B | 
|
Def/Res Ruse 1 | 60 | — | If a Rally Assist skill is used by unit or targets unit, inflicts Def/Res-1 and【Guard】on foes in cardinal directions of unit and target through their next actions. | If a Rally Assist skill is used by unit or targets unit, inflicts Def/Res-1 and【Guard】on foes in cardinal directions of unit and target through their next actions. 【Guard】 Inflicts Special cooldown charge -1 on unit per attack during combat through its next action. (Only highest value applied. Does not stack.) |
 | Def/Res Ruse 2 | 120 | Def/Res Ruse 1 | If a Rally Assist skill is used by unit or targets unit, inflicts Def/Res-3 and【Guard】on foes in cardinal directions of unit and target through their next actions. | If a Rally Assist skill is used by unit or targets unit, inflicts Def/Res-3 and【Guard】on foes in cardinal directions of unit and target through their next actions. 【Guard】 Inflicts Special cooldown charge -1 on unit per attack during combat through its next action. (Only highest value applied. Does not stack.) | |
 | Def/Res Ruse 3 | 240 | Def/Res Ruse 2 | If a Rally Assist skill is used by unit or targets unit, inflicts Def/Res-5 and【Guard】on foes in cardinal directions of unit and target through their next actions. | If a Rally Assist skill is used by unit or targets unit, inflicts Def/Res-5 and【Guard】on foes in cardinal directions of unit and target through their next actions. 【Guard】 Inflicts Special cooldown charge -1 on unit per attack during combat through its next action. (Only highest value applied. Does not stack.) | |
Cannot use:    | ||||||
Notes
- The stat decrease that can be applied by Def/Res Ruse is considered a
Penalty.
- Any 【Penalty】 effect 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】 effect on a unit lasts until that unit takes an action. If the unit takes multiple actions in a turn, they will only have
- Def/Res Ruse applies the
Guard status effect.
- 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
Tempo Echo and 
Arcane Þrima will neutralize effects that inflict "Special cooldown charge -X" on its user. - Def/Res Ruse does not trigger if the unit receives a
Bonus indirectly from skills, such as from 
Rally Up Res+. - Cardinal directions refers to spaces directly north, south, east, or west of the user. Distance does not factor.
List of owners
| Unit | Skill chain | ||
|---|---|---|---|
 | Def/Res Ruse 1 4  SR | Def/Res Ruse 2 4 SR | Def/Res Ruse 3 5  |
 | Def/Res Ruse 1 3  | Def/Res Ruse 2 4  | Def/Res Ruse 3 5 |
 | Def/Res Ruse 1 4 SR | Def/Res Ruse 2 4 SR | Def/Res Ruse 3 5 |
Availability
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2019-07-09 | 2019-08-09 | Summer Refreshes | Def/Res Ruse 3 |
| 2019-12-10 | 2019-12-25 | Focus: Double Special Heroes | Def/Res Ruse 3 |
| 2020-02-02 | 2020-03-01 | Special Hero Summon (Year 3) | Def/Res Ruse 3 |
| 2020-03-06 | 2020-03-31 | New Heroes: Harmony amid Chaos | Def/Res Ruse 3 |
| 2020-05-29 | 2020-06-06 | Mythic Heroes - Mila | Def/Res Ruse 3 |
| 2020-06-18 | 2020-07-02 | Call of the Sea - Special Hero Gift | Def/Res Ruse 3 |
| 2020-06-27 | 2020-07-07 | Focus: Father-Complex Fray | Def/Res Ruse 3 |
| 2020-07-13 | 2020-07-27 | Summer Refreshes | Def/Res Ruse 3 |
| 2020-08-26 | 2020-09-03 | Focus: Heroes with Ruse Skills | Def/Res Ruse 3 |
| 2020-11-08 | 2020-11-16 | Revival: Harmony amid Chaos | Def/Res Ruse 3 |
| 2021-02-26 | 2021-03-05 | Legendary Heroes - Claude | Def/Res Ruse 3 |
| 2021-04-16 | 2021-04-23 | Focus: Heroes with Gap Skills | Def/Res Ruse 3 |
| 2021-05-13 | 2021-05-20 | Legendary Hero Remix | Def/Res Ruse 3 |
| 2021-07-15 | 2021-07-29 | Summer Refreshes | Def/Res Ruse 3 |
| 2021-10-24 | 2021-10-25 | Focus: Heroes with Ruse Skills | Def/Res Ruse 3 |
| 2021-10-27 | 2021-11-06 | Focus: Mercedes & Annette | Def/Res Ruse 3 |
| 2022-06-20 | 2022-06-24 | Three Hopes Release Event 13 | Def/Res Ruse 3 |
| 2022-07-22 | 2022-08-01 | Summer Refreshes | Def/Res Ruse 3 |
| 2022-08-06 | 2022-08-07 | Focus: Heroes with Gap Skills | Def/Res Ruse 3 |
| 2022-12-15 | 2022-12-26 | Focus: Tempest Trials | Def/Res Ruse 3 |
| 2023-03-12 | 2023-03-19 | Focus: Weekly Revival 67 | Def/Res Ruse 3 |
| 2023-05-21 | 2023-05-28 | Focus: Weekly Revival 72 | Def/Res Ruse 3 |
| 2023-07-20 | 2023-07-30 | Summer Refreshes (4★SHSR) | Def/Res Ruse 3 |
| 2023-08-06 | 2023-08-13 | Focus: Weekly Revival 67 | Def/Res Ruse 3 |
| 2023-10-15 | 2023-10-22 | Focus: Weekly Revival 72 | Def/Res Ruse 3 |
| 2024-03-10 | 2024-03-18 | Focus: New Power | Def/Res Ruse 3 |
| 2024-03-31 | 2024-04-07 | Focus: Weekly Revival 67 | Def/Res Ruse 3 |
| 2024-05-05 | 2024-05-12 | Focus: Weekly Revival 72 | Def/Res Ruse 3 |
| 2024-07-18 | 2024-07-25 | Summer Refreshes (4★SHSR) | Def/Res Ruse 3 |
| 2024-10-20 | 2024-10-27 | Focus: Weekly Revival 67 | Def/Res Ruse 3 |
| 2024-11-24 | 2024-12-01 | Focus: Weekly Revival 72 | Def/Res Ruse 3 |
| 2025-04-20 | 2025-04-27 | Focus: Weekly Revival 67 | Def/Res Ruse 3 |
| 2025-04-26 | 2025-04-27 | 35th Anniversary: Daily Revival 72 | Def/Res Ruse 3 |
| 2025-04-26 | 2025-04-27 | 35th Anniversary: Daily Revival 67 | Def/Res Ruse 3 |
| 2025-05-25 | 2025-06-01 | Focus: Weekly Revival 72 | Def/Res Ruse 3 |
| 2025-07-25 | 2025-08-04 | Summer Refreshes | Def/Res Ruse 3 |
| 2026-02-08 | 2026-02-12 | Summer Refreshes (4★SHSR) | Def/Res Ruse 3 |
| 2026-06-07 | 2026-06-14 | Focus: Weekly Revival 67 | Def/Res Ruse 3 |
Distributed units
- Excellus: Conqueror’s Wile (×1)
- Excellus: Conqueror’s Wile (×2)
- Use Heroic Grails (×20)
- Grand Hero Battles quest (June 2026) (×1)
- Grand Hero Party quest (August 2025) (×1)
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2021-03-04T03:00:00Z | Annette: Overachiever | Divine Code: Part 2 | |
| 2021-07-06T03:00:00Z | 2021-08-28T06:59:59Z | Ursula: Clear-Blue Crow | Divine Code: Ephemera 7 |
In other languages
| Language | Name |
|---|---|
| English (US) | Def/Res Ruse |
| Japanese | 守備魔防の大共謀 |
| German | Ver./Res.-Kniff |
| Spanish (Europe) | Treta Def/Res |
| Spanish (Latin America) | Treta Def./Res. |
| French | Leurre Déf/Rés |
| Italian | Furto Dif/Res |
| Traditional Chinese (Taiwan) | 防守魔防大共謀 |
| Portuguese | Ardil Def./Res. |