Blast Jewel

A crystal ball flies from your hands to a chosen point. Any creature within a 20ft. radius must make a Dexterity saving throw or suffer 4d8 fire damage, or half as much on a success, any creature within 40ft. of the point must make a Dexterity saving throw or suffer 3d8 piercing damage, or half as much on a success (Creatures within the 20ft. radius use their first Dexterity saving throw instead of making a secondary save).