Sandstorm

Name	Cooldown	Description	SP	Required
Sandstorm	4	Boosts damage by 80% of unit's Def and calculates damage using 150% of unit's Def instead of the value of unit's Atk when Special triggers. Reduces damage from attacks by percentage = 40 - current Special cooldown count value × 10 during combat. If unit's Def > foe's Def, decreases Spd difference necessary for unit to make a follow-up attack by X and increases Spd difference necessary for foe to make a follow-up attack by X during combat (X = difference between Def stats; max 10; for example, if Spd difference necessary increases by 10, Spd must be ≥ 15 more than foe's Spd to make a follow-up attack; stacks with similar skills).	500	Ignis
This skill can only be equipped by its original unit.

* Unused restrictions: Cannot use:

Effects[ | ]

Effects	Targets	Conditions
Combat effects
Boosts damage by X% X = 80% of Unit's Def	Unit	Special triggers
Damage uses 150% of Unit's Def		Special triggers
Reduces damage by X% X = 40 - Unit's current Special CD x 10 from Foe's attacks		—
Decreases the Spd difference by X (max: 10) X = Unit's Def - Foe's Def		Unit's Def > Foe's Def
Increases the Spd difference by X (max: 10) X = Unit's Def - Foe's Def	Foe	Unit's Def > Foe's Def

Note[ | ]

The Special damage boosting effect of Sandstorm 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.
Sandstorm does not calculate damage using the lower of foe's Def or Res, and therefore isn't affected by skills such as Mystic Boost 4 and Splashy Bucket+.
- For more information, see Damage calculation.

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.
  - For example, if both Dodge and Gust trigger, the maximum total damage-reduction is 64% instead of 80%, since the two skills reduce the damage to (1 − 40%) × (1 − 40%) = 36% of the original damage.
- 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.
Sandstorm decreases the Spd difference necessary to perform a follow-up attack.
- 【Phantom】 effects such as Spurn 4 or Phantom Spd 3 will not affect the Spd difference decreasing effect of Sandstorm.
- All Spd difference increases and/or decreases will stack with each other.
  - For example, if a foe with Def ≥ the unit's Def has Frozen and Clever Fighter, the effects will stack and the the Spd difference necessary for the unit to make a follow-up attack remains the same.
Sandstorm increases the Spd difference necessary to perform a follow-up attack.
- 【Phantom】 effects such as Spurn 4 or Phantom Spd 3 will not affect the Spd difference increasing effect of Sandstorm.
- All Spd difference increases and/or decreases will stack with each other.
  - For example, if a foe with Def ≥ the unit's Def has Frozen and Clever Fighter, the effects will stack and the the Spd difference necessary for the unit to make a follow-up attack remains the same.