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

Menacing Lament

FOCUS 2
UNCOMMONAUDITORYCONCENTRATEEMOTIONFOCUSMENTAL
Cast
Area 30-foot emanation
Duration 1 round

You wail a dirge for your enemies. Enemies in the area are Off-Guard against your attacks and gain no benefits from flanking you for the duration.

Pathfinder Lost Omens Shining KingdomsORC