Earthwave

The user slams their hand into the ground and creates an undulating wave of earth in front of them. All creatures within the effective range of the spell take 1d8 force damage. All creatures within range must also make a DEX saving throw. One a failed save, the creature is knocked prone. 

At higher levels: When using a spell slot of 2nd or higher, do 1d8 force damage more for each spell slot above 1st. As a 6th or higher level caster, this spell does damage in a radius around the caster instead of a projected rectangle.