Earth Tremor (CofC)

You cause a tremor in the ground at a point you can see within range. Each creature within 10 feet of that point other than you takes 1d4 bludgeoning damage and is knocked prone. If the ground in that area is loose earth or stone, it becomes difficult terrain until cleared, with each 5-foot-diameter portion requiring at least 1 minute to clear by hand.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d4 for each slot level above 1st. For every 2 spell slots above level 1, both the range and affected area increase by 5 feet.