Brain Bursta

The caster glowers at their target and lets loose a bolt of brain-melting energy. A cacophony or pure, chaotic, violence and malice fills the targets mind. The target must succeed on an Intelligence saving throw or take 2d6 psychic damage or half as much on a success. If the target fails their saving throw by more than 5 they become stunned and a wave of psychic energy erupts from their brain. Each creature within 5 feet must succeed on a Dexterity saving throw or take 1d6 psychic damage. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, both damage sources are increased by 1d6 for each slot level above 1st.