Improved Grappler

Prerequisite: Strength 13 or higher.

You've developed the skills necessary to hold your own in close-quarters grappling. You gain the following benefits:

• You have advantage on attack rolls against a creature you are grappling.
• You can use your action to put a creature grappled by you in a chokehold. To do so, make another grapple check. If you succeed, the creature becomes restrained until the grapple ends, and you have disadvantage on attack rolls against other creatures for the duration. While restrained this way a creature must make a DC (8 + your Proficiency bonus + your Strength modifier) Strength saving throw each time it attempts to cast a spell with a verbal component, or fail to do so on a failure.