Charged Fireball

A bright streak flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an explosion of flame. Each creature in a 10-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 fire damage on a failed save, or half as much damage on a successful one.

The fire spreads around corners. It ignites flammable objects in the area that aren't being worn or carried.

the damage increases by 1d6for every charge and range is increased by 5ft for each slot level above 1st


if you cast on one charge it has a range of 30ft 5d6 on a failed save it knocks them prone and half on a successful one

but every turn you use your action to charge it (up to 4 charges max)It gains 1d8 damage and 30ft of range.

if it has all four charges and hits it does an additional 1d10