Here’s the Kicker

You have been trained to use your kicks to throw your opponents off balance during combat. Once per turn, when you connect with a kick using your unarmed strike, you can force your opponent to make a Dexterity saving throw. On a failed save your opponent chooses from one of the following two effects:

• Be knocked prone in their place
• Be pushed 5 feet from you and lose their balance. On their next turn their speed is halved, and attacks on their next turn are at disadvantage.