| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
Leaden Regrets | 300 | — | If unit can transform, transformation effects gain "if unit is within 2 spaces of a beast or dragon ally, or if number of adjacent allies other than beast or dragon allies ≤ 2" as a trigger condition (in addition to existing conditions). If defending in Aether Raids, at the start of enemy turn 1, if conditions for transforming are met, unit transforms. If unit is transformed or if foe initiates combat, inflicts Atk/Def-10 on foe, reduces damage from foe's follow-up attack by 80% ("follow-up attack" normally means only the second strike; for effects that grant "unit attacks twice," it means the third and fourth strikes), and reduces the percentage of foe's non-Special "reduce damage by X%" skills by 50% during combat (excluding area-of-effect Specials). If foe initiates combat, after combat, the closest foes within 4 spaces of target who have yet to act have their actions end immediately. |
| This skill can only be equipped by its original unit. | |||||
* Unused restrictions: No restrictions.
Effects[]
| Effects | Targets | Conditions |
|---|---|---|
| Map effects | ||
 Adds "if a   Dragon/Beast Ally is within 2 spaces or adjacentnon-Dragon/Beast  Allies ≤ 2"to transform conditions | Unit | — |
 Transforms if defendingin Aether Raids & conditions are met | At start of Enemy Turn 1 | |
 Ends action | Closest  Foeswithin 4 spaces of  Target | After combat in Enemy Phase |
| Combat effects | ||
 Atk/Def-10 | Foe | Enemy Phase or Unit is transformed |
 Reduces "Reducesdamage by X%" by 50% | ||
 Reduces damage by 80%from Foe's follow-up(including fourth attacks) | Unit | |
Notes[]
- The additional transformation conditions added by Leaden Regrets allow the user to transform if either the regular transformation conditions or the additional transformation conditions are met.
- Effects that remove transformation conditions will remove both the regular and additional transformation conditions.
- "If foe initiates combat" means if a foe triggers combat during the enemy phase. The unit being initiated upon does not need to deal damage, nor be able to counterattack.
- However, if the effect is applied after combat, the unit being initiated upon must also survive it to fulfill this condition.
- The stat reduction that can be applied during combat by Leaden Regrets is considered a temporary debuff.
- The non-Special "reduces damage by X%" 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.
- Umbra Burst weapons will always deal a minimum of 1 damage even if the foe is equipped with
Invincible Sister, 
Vengeful God, Invincibility Seals, or damage reduction effects. - "Reduces damage by X%" effects stack multiplicatively, unlike interactions related to the weapon-triangle, such as Triangle Adept and the weapon-triangle advantage boost.
- Non-Special "reduces damage by X%" effects can be neutralized or reduced only during combat by effects such as Share Spoils+ or Halves non-Special damage reduction.
- For more information, see Damage calculation.
- If a skill such as
- Leaden Regrets will reduce the effect of non-Special "reduces damage by X%" effects from Specials such as Vital Astra.
- Damage-reduction reducing effects stack multiplicatively, unlike interactions related to the weapon-triangle, such as Triangle Adept and the weapon-triangle advantage boost.
- For example, if a unit has Halves non-Special damage reduction and a foe with Dodge is on a space with 【Divine Vein (Water)】, the maximum total damage-reduction is reduced to 10%, since the two effects reduce the damage to (1 − ((40% − 50%) − 50%)) = 90% of the original damage instead of 60% of the original damage.
- For example, if a unit has
- Each damage-reduction effect is reduced individually.
- For example, if a unit has Halves non-Special damage reduction and the foe has both Spurn 4 and Dodge, the maximum total damage-reduction is reduced to 40%, since the two effects reduce the damage to (1 − (50% − 50%)) × (1 − (40% − 50%)) = 60% of the original damage instead of 30% of the original damage.
- For example, if a unit has
- Leaden Regrets will not reduce the effect of Special "reduces damage by X%" effects or flat damage-reduction effects such as Ice Wall or Laguz Loyalty.
- For more information, see Damage calculation.
- Damage-reduction reducing effects stack multiplicatively, unlike interactions related to the weapon-triangle, such as
- The effect is triggered regardless of whether Leaden Regrets's user performs an attack during combat. If foe initiates combat and user cannot counterattack, Leaden Regrets's effect will still trigger.
- Leaden Regrets's user needs to survive the combat for the effect to trigger.
- Leaden Regrets can end the foe's action.
- Leaden Regrets triggers after start-of-turn effects and is unaffected by False Start.
- Action ending effects such as Leaden Regrets, Future-Sighted, and After Start-of-Turn Skills Trigger, Action Ends Immediately can be neutralized by effects such as Firm Canto Curb.
- Action ending effects such as from Foresight Snare, Aether Raids Structures, and units in the Special Slot on the defensive team cannot be neutralized by effects such as Firm Canto Curb.
- Leaden Regrets triggers after start-of-turn effects and is unaffected by
List of owners[]
| Unit | Skill chain |
|---|---|
 | Leaden Regrets 5  |
In other languages[]
| Language | Name |
|---|---|
| Japanese | 鉛色の残夢 |
| German | Bleierne Reue |
| Spanish (Europe) | Pesar plomizo |
| Spanish (Latin America) | Pesar plomizo |
| French | Regrets gris |
| Italian | Tetri rimorsi |
| Traditional Chinese (Taiwan) | 鉛色殘夢 |
| Portuguese | Pesar plúmbeo |