Booming Blade

You brandish the weapon used in the spell's casting and
make a melee spell attack with it. On hit, the target suffers the weapon attack's normal effects 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 1D8 thunder damage and the spell ends.

At 5th level, the melee attack deals an extra 1D8 thunder damage to the target on a hit, and the damage the target takes for moving increases to 2D8. Both dama