From Pathfinder Howl of the Wild, which isn't enabled.

Trample Mimicry

FEAT 10

Activity 3 actions

Prerequisites Wild Mimic Dedication; you have seen a creature use Trample or have identified a creature with Trample in combat

You Stride up to double your speed and can move through the spaces of creatures at least one size smaller, trampling each creature whose space you enter. You can attempt to trample the same creature only once in a single use of Trample Mimicry. You deal 3d12 (4d12 at level 14, 5d12 at level 18) bludgeoning damage to each trampled creature (basic Reflex save against the higher of your class DC or spell DC). This damage increases by 1d12 at levels 14 and 18.

Pathfinder Howl of the WildORC