Arcane Obliteration

A bright ball of magic flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an explosion of arcane energy. Each creature in a 30-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 14d6 force damage on a failed save, or half as much damage on a successful one.

The arcane energy spreads around corners.