Emerald Shards

You loose a volley of psychically-powered emeralds in a 20-foot cone. Each creature in the area must make a Dexterity saving throw. A creature takes 3d8 piercing damage on a failed save, or half as much damage on a successful one. A creature that fails the save also takes psychic damage equal to your spellcasting modifier from the emeralds exploding into psychic energy.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the piercing damage increases by 1d8 for each slot level above 2nd. When you cast this spell using a spell slot of 5th level or higher, you may use your spellcasting ability score instead of your spellcasting modifier for the psychic damage.