The spell consumes the ball bearings, and Creates 1 inch balls that Deal Bludgeoning, and a Damage Type of the Casters Choosing. The Caster Can Choose Cold, Acid, Fire, Lightning, Necrotic, Radiant. The Ball bearings will hover around the PC, and on an Action will expend 1 or more ball bearings Spell attacking a Target within 30ft radius Centered on the Player. Damage and Maximum number of ball bearings used in casting is shown below. Target can Dodge with a Dex Save and on success takes 1/2 damage, and fail takes full damage. 

1st Level: 5 Ball bearings, 1d4 each
2nd level: 6 Ball bearings 1d4 each
3rd level: 8 Ball bearings 1d4 each
4th Level: 10 Ball bearings 1d4 each
5th Level: 10 Ball bearings 1d6 each
6th level: 10 Ball bearings 1d8 each
7th level and above no changes