Blade Lotus

A small metallic sphere flies out from your hand to a point you choose within range and then blossoms into a flower with metallic blades for petals. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 magical slashing damage on a failed save, or half as much damage on a successful one.

The blades spreads around corners. It may cut through some materials that aren't being worn or carried at the digression of the DM.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.