pf2e.fyi
From Pathfinder Lost Omens Ancestry Guide, which isn't enabled.

Mask of Rejection

FEAT 5
FORTUNEORC
Activity reaction
Prerequisites Orc Warmask
Frequency once per day
Trigger You fail a saving throw against an effect from your warmask's magical tradition.
Requirements You're wearing your warmask.

Your warmask projects a white-hot fury that attempts to vaporize the offending magic. You reroll the triggering check with a +2 circumstance bonus, but you must use the new result, even if it's worse than your first roll.

Pathfinder Lost Omens Ancestry GuideOGL