Earth Tremor

Casting Time: 1 action - Range: Self (10-foot radius)
Components: V, S - Duration: Instantaneous
Each creature other than you in that area must
make a Dexterity saving throw. On a failed save,
a creature takes 1d6 bludgeoning damage and is
knocked prone. If the ground in that area is
loose earth or stone, it becomes difficult terrain
until cleared.
Higher Level: 2nd or higher +1d6 extra dmg.