Violent Nova

You point your finger at a point on the ground within 120 feet and it erupts into a 5-foot square of purple energy. Anyone in that area must make a Dexterity saving throw. On a failed throw, they take 3d8 radiant damage.

At higher levels. When using this spell at a higher level, the damage increases by 2d8 per level and the AoE increases by 5 feet.