Stoneshatter

3-level Transmutation

You raise a 5 foot chunk of stone and rock out of the ground, leaving it to hover 5 feet in the air at a point you can see within range. As a reaction before the spell ends, you can have the stone explode into shrapnel, damaging all enemies within 10 feet of the stone. Each creature within range must succeed on a Dexterity saving throw. A failed save results in 3d6 bludgeoning damage, and 4d6 piercing damage. A successful save halves the damage.
 
At higher levels: When you cast this spell using a spell slot of 4th level or higher, the piercing damage dealt increases by 1d6 per spell slot expended above 3rd.