Eldritch Explosion

You call upon your patron's power to launch a small orb of power that detonates at your target location, each creature within 10 feet of your chosen location must succeed on a dexterity saving throw against your spell save DC. Targets that fail the check take 6d8 damage, or half of that on a successful save. When cast with a spell slot of higher level, add 1d6 per spell level above 3rd.