Vigor

“	When HP is higher than a certain percentage, increases ATK by the effect percentage (only the highest ATK increase from effects of this type will be applied).	”
	—In-game tip

Vigor is a buff in Arknights.

Overview

Vigor increases ATK by a percentage so long as the target's HP is above a specific percentage (not amount). Multiple instances of Vigor are mutually exclusive on a unit; the highest effect takes precedence over the others.

Sources

Operator	Skill/talent	Target (HP ratio)	Value
Fiammetta	Sufferer of Tribulations	Self, 50%; the effect is doubled at >80% HP	Base: 15% (30%) E1: 20% (40%) E2: 25% (50%)
Pallas	Blessing of Heroism	Melee friendly unit on the tile ahead (or self if there are none), 80%	L1-L3: 30% L4-L6: 35% L7: 40% M1-M2: 45% M3: 50%
	Birth of a Hero	Minoan Operators while Pallas is deployed, 80%/50% (INS-X Stage 2+)	E1: 15% E2: 25% INS-X Stage 2: 27% INS-X Stage 3: 30%
Wind Chimes	Mountain Traveler	Self, 50%	E1: 15% E2: 20% P5: +2%