pf2e.fyi
From Pathfinder Lost Omens Shining Kingdoms, which isn't enabled.

Blessed Sentinel

FEAT 6
ARCHETYPEFLOURISH
Activity 2 actions
Archetype Wylderheart
Prerequisites Wylderheart Dedication

You infuse a weapon with the blessing of Ketephys and attack. Make a Strike. This Strike gains the holy trait and deals an additional 1d4 spirit damage, or 2d4 spirit damage against fiends. This counts as two attacks for your multiple attack penalty.

Pathfinder Lost Omens Shining KingdomsORC