Skill Increases
Level 3
At 3rd level and every 3 levels thereafter, you gain a skill increase. You can use this increase either to increase your proficient rank to rained in one skill you're untrained in, or to increase your proficiency rank in one skill in which you're already trained to expert.
At 7th level, you can use skill increases to increase your proficiency rank to master in a skill in which you're already an expert, and at 15th level, you can use them to increase your proficiency rank to legendary in a skill which you're already a master in.