The Hangman's Gambit

You have mastered the use of a particular type of weapons, making your use of them efficient and deadly. Your foe cannot escape your grasp.

• Your Strength Score or Dexterity Score increases by 1, to a maximum of 20.
• When you hit with an attack made with a whip, nunchakus, or any other whip-like weapon,  you can use your bonus action to grapple the target of the attack. You can use your Dexterity Score instead of your Strength score when making the grapple check. You can use an action to make an additional grapple check to restrain a target you've grappled this way. You cannot attack using the weapon while grappling or restraining the target. The creature remains restrained until they break out or the grapple ends. You can grapple or restrain only one target at a time this way.
• On the start of each subsequent turn, you deal 1d4 bludgeoning damage to the target you've restrained using your weapon.