| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
Water Boost 1 | 50 | — | At start of combat, if unit's HP ≥ foe's HP+3, grants Res+2 during combat. |
|
Water Boost 2 | 100 | Water Boost 1 | At start of combat, if unit's HP ≥ foe's HP+3, grants Res+4 during combat. | |
|
Water Boost 3 | 200 | Water Boost 2 | At start of combat, if unit's HP ≥ foe's HP+3, grants Res+6 during combat. | |
| No restrictions. | |||||
Available as a Sacred Seal.
Notes
- The stat increase that can be applied by Water Boost is considered a temporary buff.
- Water Boost compares current HP between units to apply the Combat Buff.
List of owners
| Unit | Skill chain | |||
|---|---|---|---|---|
 | Water Boost 1 3  | Water Boost 2 4  | Water Boost 3 5  | – |
 | Water Boost 1 5 | Water Boost 2 5 | Water Boost 3 5 | Fireflood Boost 3 5 |
 | Water Boost 1 5 | Water Boost 2 5 | Water Boost 3 5 | Fireflood Boost 3 5 |
 | Water Boost 1 3 | Water Boost 2 4 | Water Boost 3 5 | – |
 | Water Boost 1 5 | Water Boost 2 5 | Water Boost 3 5 | Fireflood Boost 3 5 |
 | Water Boost 1 5 | Water Boost 2 5 | Water Boost 3 5 | Fireflood Boost 3 5 |
Seal acquired from
Tempest Trials reward
- Tempest Trials+: Before We Met... ( – ): 10,000 Score.
Sacred Seal Forge
- Water Boost 1,Water Boost 2,Water Boost 3: Create for 20
Great Transparent Badge, 100 Transparent Badge, 20 Sacred Coin.
In other languages
| Language | Name |
|---|---|
| Japanese | 生命の静水 |
| German | Wasserschub |
| Spanish (Europe) | Hidrovitalidad |
| Spanish (Latin America) | Hidrovitalidad |
| French | Boost apaisant |
| Italian | Impulso acqua |
| Traditional Chinese (Taiwan) | 生命靜水 |
| Portuguese | Hidrovital |