Whip Suzerain (5e Feat)
From D&D Wiki
Prerequisites: proficiency with whips
You have mastered the flick of the wrist that is the whip, you have great control over your whip and your opponents. You gain the following benefits:
- You gain a +1 bonus to attack & damage rolls you make with a whip.
- While you are wielding a whip, other creatures provoke an opportunity attack from you when they enter your Reach.
- When you hit with an opportunity attack using the whip, the target must succeed on a Dexterity saving throw (DC 8 + your proficiency bonus + your Strength or Dexterity modifier) or be knocked prone.