You learned to take full advantage of hand to hand close-quarter combat. You gain the following benefits:

• After grappling a creature your size or smaller, you can then throw them 10 feet x  your strength modifier as an action. The creature then takes 1d6 plus your strength mod. If the thrown creature hits another creature than they take the same damage.
• After grappling a creature, you can force them into a chokehold with another strength check vs their dex and/or strength check. If the target fails, they take 1d6 damage per round at the start of their turn, until they can break free with another check.
• After grappling a creature, you can use an action to pin them painfully. A creature pinned must spend an action to break free with a dex or strength check. If the creature fails, they suffer a point of exhaustion. If the creature manages to break free before reaching max exhaustion, they suffer from exhaustion until combat is over.