Swordmaster

You’ve mastered the use of the blade as both a defensive tool and a weapon. You gain the following benefits:

• Increase your Strength or Dexterity score by 1, to a maximum of 20.
• When you are wielding a sword with which you are proficient and another creature that you can see targets you with an attack, you can use your reaction to add half your proficiency bonus (rounded up) to your AC for that attack, potentially causing the attack to miss. If you successfully deflect the blow and the attacking creature is within melee range, you can make a single weapon attack against the creature as part of the same reaction. The weapon's damage die for this attack is a d4.