Grappler 2014

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 try to pin a creature grappled by you. The creature makes a Strength or Dexterity saving throw against your maneuver DC. On a failure, you and the creature are both restrained until the grapple ends.

Other versions

Source: System Reference Document 5.1 (Wizards of the Coast) · License: Creative Commons Attribution 4.0 / OPEN GAME LICENSE Version 1.0a details