You’ve learned to deftly parry attacks, granting you the following benefits:

• Increase your Dexterity score by 1 to a maximum of 20.
• Suppose you are holding a Finesse Weapon, and another creature hits you with a Melee Attack. In that case, you can use your Reaction to add your Proficiency Bonus to your Armor Class for that attack, potentially causing the attack to miss you.