Tempestuous Blade

You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack’s normal effects and then gets pushed 5ft by a violent gust of wind away from you. If the target is pushed into an obstacle or another creature, they take 1d8 bludgeoning damage. 

This spell’s damage increases when you reach certain levels. At 5th level, the melee attack deals an extra 1d8 bludgeoning damage to the target on a hit, and the damage the target takes for impacting something increases to 2d8. Both damage rolls increase by 1d8 at 11th level (2d8 and 3d8) and again at 17th level (3d8 and 4d8).