Trample

You may activate this after moving at least 20ft in a movement action to gain Trample until you stop moving. Abilities with the Teleport keyword do not apply for this, but declaring multiple AP to move at the same time counts as 1 action. While under the effects of trample, you don't provoke attacks of opportunity by moving and you can move into enemies that are at least one size smaller than your mount. An enemy may spend 1 RP to move out of the way to an empty spot within 5ft of them.

If they don’t move out of the way, you make a Sure Hit Light attack against them with your mount, using your mount’s stats. On damage, you knock them prone into the square you came from and keep moving, occupying the square they were in. Otherwise your movement action ends.

Each enemy can only be affected by trample once per activation of the ability, regardless of whether they are attacked or move out of it.