Eadbutt

This spell is inspired by the Warhammer Fantasy Universe. 

A wave of force energy travels up to 30 feet in a cone centered from the caster. All creatures within the cone must make a Dexterity saving throw, suffering 3d6 Force damage and is knocked prone. Large and larger creatures are not knocked prone, they are instead pushed 10 feet back. Succeeding the saving throw causes only half damage and the creature is not knocked prone.

At Higher Level. Increases the damage dice by 1d6 for each spell slot used above 2nd level.