Whip Master (5e Feat)
From D&D Wiki
With a flick of the wrist, you have great control of both your whip and your opponents. You gain the following benefits:
- You gain a +2 bonus to attack rolls you make with a whip.
- When you use a whip, its damage die changes from d4 to d6.
- When you hit a creature no more than one size larger than you with a whip on your turn, you can use a bonus action to pull the target up to 5 feet towards you, attempt to grapple it, or try to knock it prone.