Booming Arrow

You fire the weapon used in the spell’s casting and make a ranged attack with it against one creature. On a hit, the target suffers the weapon attack’s normal effects plus an extra 1d6 thunder damage and then becomes sheathed in booming energy until the start of your next turn. If the target willingly moves 5 feet or more before then, the target takes 1d6 thunder damage, and the spell ends.

This spell’s damage increases when upcast. The ranged attack deals an extra 1d6 thunder damage to the target on a hit, and the damage the target takes for moving increases by 1d6 per level beyond 1st.