Conjure Bones

You summon a hail of bones. Each creature of your choice within range must make a dexterity saving throw or take 1d6 bludgeoning damage and the ground in the spell's area becomes difficult terrain until the bones are cleared.

This spell's damage increases by 1d6 when you reach 5th level (2d5), 11th level (3d6), and 17th level (4d6).