Volcanic wave

You focus on a point you can see on the ground that is made of stone, rock or earth you manipulate the matter to churn and grind against its self it starts to become super heated rock you can force the rock forward 30ft  from its position it is 10 ft wide

A creature that gets get by the rock takes 3D3 bludgeoning damage and 6D8 fire damage and must make a dexterity saving throws or any thing flammable will be set on fire and on a save you take half damage and are not set on fire 

The area the magma wave travelled through becomes difficult tarran