Tackler

You've practiced time and time again trying to perfect techniques of ways to damage opponents once grappled. You gain the following benefits:

• When a target is grappled, you can make a strength contest. If you are at least one size larger than the opponent, you have advantage on this contest. if you win, you can move up to half your speed and keep the target grappled throughout. After this you can take an action, or drop them off of a ledge if there is one nearby, then they will take appropriate fall damage.
• Rather than making an attack role against a grappled target, you can instead tackle them. when you tackle them, you make a strength contest. Upon success, you tackle them, causing them to fall on the ground. They take damage equal to your weight x 2d4 divided by 100. Then they must succeed a dc(8 + your proficiency bonus + your strength modifier) and falls prone on a fail. If you tackle them off of a ledge of sorts, both you and the target take appropriate fall damage.