Void Sphere

a black tinted 1 foot long sphere from the point of origin appears and stays until you use a bonus action where it turns all spheres you desire opaque black and compresses into half it's size and then explodes at 0.5 seconds dealing 1d10 damage. This spells range does not apply when the spell has already been cast. This spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10) and it's size increases by 6 inches when you reach 5th level (1"6) and 17th level (2 feet). The amount you can have is limited to 10 at 1st level, 7 at 5th level, and 5 at 17th level