Sculpt Spell

General Feat (Prerequisite: Level 4+, Spellcasting or Pact Magic)

You gain the following benefits:

Ability Score Increase. Increase your Intelligence, Wisdom, or Charisma by 1, to a maximum of 20.

Spell Sculpting. When you cast an instantaneous spell that affects an area and requires a saving throw, you can expend a spell slot one level higher than the spell's normal level to change its area from a cone, cube, cylinder, line, or sphere into another of those shapes.

The new area must fit within the original spell's maximum dimensions, as determined by the DM. The spell deals its normal damage, and changing its shape doesn't increase its damage or other effects.