Arcane Explosion

A sudden explosion of violets and blues come from an area within range, then slowly expands to engulf anything around it. Each creature within a 10 foot radius, centered on a point you choose, must make a Dexterity saving throw. On a failed save, a target takes 3d6 force and 3d6 psychic damage, and is then pushed 10 feet into the center of the spell. Unsecured objects that weigh less than 15 pounds are moved 10 feet toward the center of the radius. On a failed save, the target only takes half of the damage