Eldritch Ball

You gather raw magical energy in the palm of your hand, forming a swirling sphere of force. You then charge at your target, releasing the energy in a powerful burst.

Make a melee spell attack against a creature within your reach. On a hit, the target takes 1d10 force damage. The force of the impact radiates out from the target, affecting all creatures within a radius of 5-foot. Every creature, except the caster, in the spell's radius must make a Strength saving throw or get push back 5 feet out of the spell's radius.

At Higher Levels. The spell's radius increases at 5th level(10 foot.) 11th level(15 foot.) And 17th level(20 foot.)