Dimensional Negation

Creatures that try to escape your hands through magical means find themselves suddenly unable to do so. You gain the following benefits:

• Increase your Strength score by 1, to a maximum of 20.
• When a creature attempts to teleport or travel to a different plane while grappled by you, they must make a Constitution saving throw as though concentrating on a spell against a DC based off your Strength score. On a failed save, the ability is expended but the creature does not teleport.
• Creatures that would normally be immune to being grappled lose that immunity against your attempts to grapple them.