You can keep your enemies at bay with a whip. You gain the following benefits:

• When you take the Attack action and attack with a one handed finesse weapon you can use a bonus action to make a melee attack with a whip.
• While you are wielding a whip other creatures provoke an opportunity attack from you when they enter your reach.
• You can replace any melee attack using a whip to reach out and grapple an opponent. To escape/avoid the grapple the target must succeed a strength or dexterity saving throw equal to 8+dexterity modifier+proficiency bonus.
• On a critical hit made with a whip the target becomes disoriented until the end of your next turn giving him disadvantage on attack rolls.