Arcane Weapon Reaction

You have channeled magic though your weapon so many times, it's like it has gotten a mind of its own. You gain the following benefits:

• Increase your Strength, Dexterity or Charisma by 1, to a maximum of 20.
• When a creature provokes an opportunity attack, you can use your reaction a second time make a melee weapon attack against it. Once you use this ability, you can’t use it again until you finish a short or long rest.