Using the Attack action, you can choose to target a creature's weapon, effectively disarming it. The target must be no more than one size larger than you and must be within your reach. Make a standard attack roll contested by the target's own attack roll. If you win the contest, you disarm the target, sending the weapon 5ft away from the enemy.
The attacker has disadvantage on its attack roll if the target is holding the item with two or more hands. The target has advantage on its ability check if it is larger than the attacking creature, or disadvantage if it is smaller.
Rolling a 1 will cause you to be disarmed instead.