Blazing Rhino

Dash 20 ft in a direction with immense force, you are immune to collision damage and falling damage during this time. Able to be cast upward. Lash out viciously along your path dealing (modifier+4d6) fire damage to all creatures within 5ft of your path. Targets directly on your path have a disadvantage on the saving throw. 

Targets will make a dexterity save against your spell DC, a successful save will result in half damage.