TFPH - Splinters

You conjure a cone of razor sharp bone splinters to rend your foes. When you cast this spell, choose one corpse of a creature that is small or larger within 15 feet of you, the corpse is torn to pieces, destroyed, and used to fuel the barrage of bones.

Each creature in a 15-foot cone must make a Dexterity saving throw against your spell save DC. On a failure, a creature takes 6d12 piercing damage. On a success, a creature takes half damage.

At higher levels. When you cast this spell using a spell slot of 5nd or higher the damage increases by 2d12 for every two slot levels above 3rd. In addition, the spell requires and consumes one additional corpse for every two slot levels above 3rd.