Avelum's Force Sphere (Tanares)

You conjure five small energy spheres in range, each about half a meter in diameter, spinning at high speed and affecting a spherical area with a diameter of 10 feet. Any creature that starts its turn or enters the area takes 3d6 force damage, or half damage with a successful Dexterity saving throw. As a bonus action, you can move the spheres together 20 feet in any direction within the spell’s range, changing the location of the sphere and its effect.