Prerequisite: Expert Harvester

Few hunters can match your knowledge and skill in obtaining pristine components.

• Increase your Dexterity or Intelligence by 1, to a maximum of 20.

• You gain proficiency in one skill from the following options: Arcana, Investigation, Medicine, Nature, Religion, or Survival.

• When you make a Harvesting check using a skill with which you are proficient, you have advantage on the roll.

(source Heliana's guide to monster hunting)