You have mastered the art of the whip, and can wield it in ways that others cannot. You gain the following benefits:

• When you are using a whip, its damage die increases from a d4 to a d6.
• Upon making a successful attack roll on a creature, you can choose to grapple it instead of dealing damage.
• While you are wielding a whip that is not engaged in grappling, other creatures provoke an opportunity attack from you when they enter your reach.