| Name | Cooldown | Description | SP | Required |
|---|---|---|---|---|
| Boulder | 3 | Boosts Special damage by 50% of unit's Def when Special triggers. If unit's or foe's Special is ready, or unit's or foe's Special triggered before or during this combat, and also, if unit's Def ≥ foe's Def-4 during combat, reduces damage from foe's next attack by 40% (once per combat; excluding area-of-effect Specials). |
500 | Bonfire |
Cannot use:                        
| ||||
Effects
| Effects | Targets | Conditions |
|---|---|---|
| Combat effects | ||
 Boosts damage by X%X = 50% of  Unit's Def | Unit | Special triggers |
 Reduces damage by 40%from  Foe's next attack | ( Unit or Foe's Special is ready or triggered before or during combat) & Unit's Def ≥ Foe's Def-4 | |
Notes
- The Special damage boosting effect of Boulder 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, 
Gold Perfection, or 
Nine-Realm Pact will neutralize all sources of damage except from Røkkr area-of-effect Specials and the minimum 1 damage from Umbra Burst weapons. - For more information, see Damage calculation.
- A foe equipped with
- The damage-reduction effect is calculated after offensive Specials and damage boosting effects such as
Arcane Lúin and 
Dominance.
- If a skill such as Miracle or
Everliving Domain can trigger, the damage-reduction effect will not trigger and the user will still survive with only 1 HP. - "Reduces damage by X%" effects stack multiplicatively, unlike interactions related to the weapon-triangle, such as
Triangle Adept and the weapon-triangle advantage boost.
- Special "reduces damage by X%" effects cannot be neutralized or reduced by effects such as
Share Spoils or 
Halves non-Special damage reduction. - For more information, see Damage calculation.
- If a skill such as
List of owners
| Unit | Skill chain | ||
|---|---|---|---|
 | Glowing Ember 5  | Bonfire 5 | Boulder 5 |
Availability
Summoning events
| Start | End | Event | Skill |
|---|---|---|---|
| 2024-11-06 | 2024-12-06 | Family Ninja Class | Boulder |
Distributed units
- This skill is not available on any distributed units.
Combat Manuals
| Start | End | Hero | Currency |
|---|---|---|---|
| 2025-03-06T05:00:00Z | Diamant: Gallant Ninja | Divine Code: Part 6 |
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