| Type | Icon | Name | SP | Required | Description 【Switch】
| |
|---|---|---|---|---|---|---|
| B | 
|
Ice Prince's Seal | 300 | — | At start of turn, if unit's HP ≥ 25%, inflicts Spd/Def-7,【Frozen】, and【Guard】on closest foes and foes within 2 spaces of those foes through their next actions. At start of combat, if unit's HP ≥ 25%, inflicts Atk/Spd/Def-5 on foe, unit makes a guaranteed follow-up attack, deals damage = 20% of unit's Def, and reduces damage from foe's attacks by 20% of unit's Def during combat (excluding area-of-effect Specials). |
At start of turn, if unit's HP ≥ 25%, inflicts Spd/Def-7,【Frozen】, and【Guard】on closest foes and foes within 2 spaces of those foes through their next actions. At start of combat, if unit's HP ≥ 25%, inflicts Atk/Spd/Def-5 on foe, unit makes a guaranteed follow-up attack, deals damage = 20% of unit's Def, and reduces damage from foe's attacks by 20% of unit's Def during combat (excluding area-of-effect Specials). 【Frozen】 Reduces inflicted unit's follow-up ability and increases foe's follow-up ability through unit's next action: Increases Spd difference necessary for unit to make a follow-up attack by X and decreases Spd difference necessary for foe to make a follow-up attack by X during combat (if foe's Def > unit's Def, X = 10 + difference between Def stats × 2; otherwise, X = 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.) 【Guard】 Inflicts Special cooldown charge -1 on unit per attack during combat through its next action. (Only highest value applied. Does not stack.) |
| This skill can only be equipped by its original unit. | ||||||
* Unused restrictions: No restrictions.
Effects[]
| Effects | Targets | Conditions |
|---|---|---|
| Status effects | ||
 Spd/Def-7 | Closest  Foes& Foeswithin 2 spaces of those Foes | At start of turn if Unit's HP ≥ 25% |
 Frozen | ||
 Guard | ||
| Combat effects | ||
 Atk/Spd/Def-5 |  Foe | Unit's HP ≥ 25% at start of combat |
 Guaranteed follow-up | Unit | |
 Boosts damage by X%X = 20% of Unit's Def | ||
 Reduces damage by X%X = 20% of Unit's Deffrom Foe's attacks | ||
Notes[]
- The stat decrease that can be applied by Ice Prince's Seal 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
- Ice Prince's Seal applies the Frozen status effect.
- 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 Frozen for their first action.
- Frozen increases the Spd difference necessary to perform a follow-up attack (Unit's Spd ≥ Foe's Spd+5).
- 【Phantom】 effects such as Spurn 4 or Phantom Spd 3 will not affect the Spd difference increasing effect of Frozen.
- All Spd difference increasing effects and/or decreases will stack with each other.
- For example, if a unit with Def ≥ the foe's Def has Frozen and Laguz Loyalty, the effects will stack and the the Spd difference necessary for the unit to make a follow-up attack remains the same.
- For example, if a unit with Def ≥ the foe's Def has
- 【Phantom】 effects such as
- Frozen decreases the Spd difference necessary to perform a follow-up attack (Unit's Spd ≥ Foe's Spd+5).
- 【Phantom】 effects such as Spurn 4 or Phantom Spd 3 will not affect the Spd difference decreasing effect of Frozen.
- All Spd difference increasing effects and/or decreases will stack with each other.
- For example, if a unit with Def ≥ the foe's Def has Frozen and Laguz Loyalty, the effects will stack and the the Spd difference necessary for the unit to make a follow-up attack remains the same.
- For example, if a unit with Def ≥ the foe's Def has
- 【Phantom】 effects such as
- 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
- Ice Prince's Seal 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.
- The stat reduction that can be applied during combat by Ice Prince's Seal is considered a temporary debuff.
- As a general rule, if a unit is both prevented from making, and guaranteed to make a follow-up attack, the effects cancel out, and the Spd difference decides instead (including effects that alter the Spd difference such as Frozen).
- A foe with effects such as Phys. Null Follow or Null Follow-Up will neutralize the guaranteed follow-up attack granted by Ice Prince's Seal.
- The damage boosting effect of Ice Prince's Seal ignores the foe's Def or Res when calculating the damage boost, and can be reduced by damage-reduction effects such as Gust, Atk/Spd Excel, and Dodge.
- Damage boosting effects stack additively, similar to flat damage-reduction effects and interactions related to the weapon-triangle, such as Triangle Adept and the weapon-triangle advantage boost.
- A foe equipped with Invincibility Seals will neutralize all sources of damage except from Røkkr area-of-effect Specials and the minimum 1 damage from Umbra Burst weapons.
- A foe equipped with Invincible Sister will neutralize all sources of damage during combat except for the minimum 1 damage from Umbra Burst weapons only once per Phase after it triggers.
- A foe equipped with Vengeful God will neutralize all sources of damage during combat except for the minimum 1 damage from Umbra Burst weapons only once per Phase after Miracle triggers if that foe's HP ≥ 25% at start of combat.
- For more information, see Damage calculation.
- Damage boosting effects stack additively, similar to flat damage-reduction effects and interactions related to the weapon-triangle, such as
- The flat damage-reduction effect is calculated after offensive Specials, damage boosting effects such as Arcane Lúin and Dominance, and "reduces damage by X%" effects such as Gust and Dodge.
- 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. - Flat damage-reduction effects stack additively, similar to damage boosting effects and interactions related to the weapon-triangle, such as Triangle Adept and the weapon-triangle advantage boost.
- Flat damage-reduction effects cannot 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
List of owners[]
| Unit | Skill chain |
|---|---|
 | Ice Prince's Seal 5  |
In other languages[]
| Language | Name |
|---|---|
| Japanese | 氷王の封印 |
| German | Eisprinz-Siegel |
| Spanish (Europe) | Sello de hielo |
| Spanish (Latin America) | Sello de hielo |
| French | Sceau de Hríd |
| Italian | Sigillo di ghiaccio |
| Traditional Chinese (Taiwan) | 冰王封印 |
| Portuguese | Selo de gelo |