From Pathfinder Lost Omens Ancestry Guide, which isn't enabled.

Heat Wave

FEAT 5

Activity reaction

Trigger An effect would deal fire damage to you, even if you resist all the damage.

Frequency once per 10 minutes

You harness the oncoming flames and twist them into a screen of heat and smoke, granting you Concealment until the beginning of your next turn.

Pathfinder Lost Omens Ancestry GuideOGL