Primordial Boost — feheroes

Type	Icon	Name	SP	Required	Description
A		Primordial Boost	300	Earth Boost 3 Water Boost 3	Grants HP+5. If foe initiates combat or if unit's HP ≥ 50% at start of combat, grants Spd/Def/Res+9 to unit during combat and restores 7 HP to unit after combat.
Cannot use:

Effects

Effects	Targets	Conditions
Permanent effects
HP+5	Unit	—
Map effects
Recover 7 HP	Unit	After combat in Enemy Phase or Unit's HP ≥ 50% at start of combat
Combat effects
Spd/Def/Res+9	Unit	Enemy Phase or Unit's HP ≥ 50% at start of combat

"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 boost that can be applied during combat by Primordial Boost is considered a temporary buff.

The healing effect is triggered regardless of whether Primordial Boost's user performs an attack during combat. If foe initiates combat and user cannot counterattack, Primordial Boost's healing effect will still trigger.
Primordial Boost's user needs to survive the combat for the healing effect to trigger.
Primordial Boost's healing effect stacks with skills such as Fury 4, that deal out of combat damage to their owner after combat.
Primordial Boost's after combat healing will not work if the foe has a skill that prevents HP recovery such as Fatal Smoke 4 or Incurable+, or the user has been inflicted with Deep Wounds.

Unit	Skill chain
Corrin: Young Kinship	Water Boost 1 5	Water Boost 2 5	Water Boost 3 5	Primordial Boost 5

Start	End	Event	Skill
2025-04-04	2025-05-06	Precious Siblings	Primordial Boost
2025-09-24	2025-10-07	Entwined Hero "12 Luminaries" 2	Primordial Boost
2025-10-21	2025-11-04	Focus: Double Special Heroes	Primordial Boost
2026-02-02	2026-03-06	Special Hero Summon (Year 9)	Primordial Boost
2026-04-11	2026-04-21	Precious Siblings	Primordial Boost