Thunder Spear

You form a crackling spear of compressed thunder and hurl it at one creature within range. Make a ranged spell attack against the target.

On a hit, the target takes 3d8 Thunder damage. If the target is Large or smaller, it is also pushed 10 feet directly away from you and has the Prone condition.

Using a Higher-Level Spell Slot. The damage increases by 1d8, and the distance the target is pushed increases by 5 feet, for each spell slot level above 2.