Swift Defender

You're quick-witted, and your reflexes are just as sharp. Enemies have a harder time hitting you in battle, and you're more easily able to dodge incoming attacks. You gain the following benefits:

• As an action, you can enter a defensive stance, which lasts until the start of your next turn. While in this stance, whenever a creature damages you with a weapon attack, you can use your reaction to reduce damage by 1d6 + your Dexterity modifier + half your level. If you reduce the damage to 0, you deflect the blow and take no damage.
• You know how to keep a close eye on any creature who wanders into or out of your attack distance, and know exactly when to strike when they do. Whenever a creature moves into or out of your reach or moves more than 5 feet while in it, you can use your reaction to make an opportunity attack against them.