Crackling Thunder

You create a small concussive burst of energy. Choose one creature within range or two creatures within range that are within 5 feet of each other. A target must succeed on a Constitution saving throw or take 1d4 thunder damage and is pushed 10 feet away from you.

This spell’s thunder damage is increased by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).