pf2e.fyi
From Pathfinder Adventure Path: Hellbreakers, which isn't enabled.

Fiendsbane Shield

ITEM 4
Price 70 gp
Bulk 1
AC Bonus +2
Hardness 3
HP 12
BT 6

This low-grade silver shield is equipped with a +1 shield boss emblazoned with the image of a beheaded fiend. Any creature with the unholy trait that wields the shield becomes Enfeebled 2 and can't recover from this condition while wielding the shield.

Activate—Silvery Backlash (concentrate, holy)
Frequency once per day
Trigger You Shield Block an attack from a creature with the unholy trait

Effect The fiendsbane shield's Hardness increases to 10, and the symbol of the beheaded demon lashes out in silvery ribbons, dealing 3d6 slashing damage (DC 19 basic Reflex save) to the creature whose attack you blocked. This damage is treated as silver for the purposes of weaknesses, resistances, and the like.
HardnessHPBT
3126
Pathfinder Adventure Path: HellbreakersORC