Marksman's Countermeasures

You have undergone extensive physical training to gain the following benefits:

• Increase your Strength or Dexterity score by 1, to a maximum of 20.
• When a creature you can see hits a target, other than you, within 15 ft. of you with an attack, you can use your reaction to reduce the damage the target takes by 1d10 + your Dexterity modifier + your character level.
• When a creature you can see moves within 5 ft of you, you can use your reaction to move up to half your movement speed in any direction. This does not provoke attacks of opportunity.
• You gain an additional 5 ft. of movement.