Knockdown
(None
points)
Basic maneuver
Action
You can use the Knockdown maneuver to trip or push a creature down. If you are able to make multiple attacks with the Attack action, this maneuver replaces one of them.
The target must be within your reach and be no more than one size category larger than you. The target makes a Strength saving throw against your maneuver DC. On a failure, you deal basic melee damage and knock the target prone .
Source