Thunderous Finale

You unleash a powerful melody, striking a creature with a devastating force of sound. Make a ranged spell attack against a creature within range. On a hit, the target takes 12d10 Thunder damage + your spellcasting ability modifier. If any two of your d10 rolls match, you can roll an additional d10 for each matching pair, adding the result to the total damage.

At Higher Levels. When you cast this spell using a spell slot of 9th level or higher, the damage increases by 1d10 for each slot level above 8th.