Earth Knuckle

From the earth beneath your feet you sculpt a human-sized fist to pummel a creature within range. A creature targeted by this spell takes 1d12 magical bludgeoning damage, and must make a successful Strength saving throw or be pushed back 10 feet as well.

The distance the target is pushed back is increased by 5ft, and this spell's damage increases by 1d12 when you reach 5th level (15ft)(2d12), 11th level (20ft)(3d12), and 17th level (25ft)(4d12).