Type	Icon	Name	SP	Required	Description
A		Earthfire Boost 3	300	Fire Boost 3 Earth Boost 3	Grants HP+5. At start of combat, if unit's HP ≥ 50%, grants Atk/Def+7 to unit during combat, and also, if unit is within 2 spaces of an ally with HP ≥ 50%, inflicts Special cooldown charge -1 on foe per attack during combat (only highest value applied; does not stack).
No restrictions.

Effects

Effects	Targets	Conditions
Permanent effects
HP+5	Unit	—
Combat effects
Atk/Def+7	Unit	Unit's HP ≥ 50% at start of combat
Special cooldown charge -1	Foe	Unit's HP ≥ 50% at start of combat & Unit is within 2 spaces of an  Ally with HP ≥ 50%

Notes

• The stat boost that can be applied during combat by Earthfire Boost is considered a temporary buff.
• 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.
• 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.

List of owners

Unit	Skill chain
Ephraim: Ardent Prince	Earth Boost 1 5	Earth Boost 2 5	Earth Boost 3 5	Earthfire Boost 3 5
Nah: Grateful One	Earth Boost 1 5	Earth Boost 2 5	Earth Boost 3 5	Earthfire Boost 3 5
Þjazi: Ruthless Jötun	Fire Boost 1 5	Fire Boost 2 5	Fire Boost 3 5	Earthfire Boost 3 5

*  Alfonse: Prince of Askr,  Sharena: Princess of Askr,  Anna: Commander, and  Forma units cannot be used for skill inheritance or turned into combat manuals.
**  Rearmed and  Attuned Heroes cannot be used for normal skill inheritance or turned into combat manuals after using their Arcane/Elite Inheritance unless their Arcane/Elite Inheritance is restored via merges.

Availability

Summoning events

Distributed units

• This skill is not available on any distributed units.

Combat Manuals

In other languages

See also

• Boost Passives