Vociferous Retribution

You create in your hand a mystical roaring weapon and throw it against the creature that damaged you. The creature must make a Dexterity saving throw. It takes 4d8 thunder damage on a failed save, or half as much damage on a successful one.

If the target has half of maximum hit points or less, it has disadvantage on the saving throw. If you has half of maximum hit points or less, double the dealt damage to the target.

At Higher Levels. When you cast this spell using a spell slot of 4st level or higher, the damage increases by 1d8 for each slot level above 3rd.