Dome of Daggers

You choose a point within range, and daggers expand out slowly from that point, creating a dome. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw as the daggers fly inwards again. A target takes 13d6 piercing damage on a failed save, or half as much damage on a successful one.

The daggers find their way around corners.

At Higher Levels. When you cast this spell using a spell slot of 9th level or higher, the damage increases by 1d6 for each slot level above 8th.