pf2e.fyi
From Pathfinder Lost Omens Impossible Lands, which isn't enabled.

Unseen Passage

FEAT 8

Frequency once per day

You have mastered a magical technique for moving through dangerous woodlands unseen. You can cast Vanishing Tracks as an innate primal spell heightened to a spell rank equal to half your level rounded up.

Pathfinder Lost Omens Impossible LandsOGL