From Pathfinder Lost Omens Cheliax, Infernal Inheritance, which isn't enabled.

Crop Protection

FEAT 4

Activity reaction

Prerequisites Bellflower Tiller Dedication

Trigger An enemy within your reach attacks a member of your crop.

While you prefer to keep a low profile, you are quick to attack to protect your crop. Make a melee Strike against the triggering enemy. If your attack is successful, the member of your crop gains a +1 circumstance bonus to AC against the triggering attack.

Pathfinder Lost Omens Cheliax, Infernal InheritanceORC