Pathfinder 2e Action / Feat: Keen Eyes

Description Your eyes are sharp, allowing you to make out small details about concealed or even invisible creatures that others might miss. 
Applications You gain a +2 circumstance bonus when using the Seek action to find hidden or undetected creatures within 30 feet of you. When you target an opponent that is concealed from you or hidden from you, reduce the DC of the flat check to 3 for a concealed target or 9 for a hidden one.