Void Eruption

As a bonus action, a blast of swirling void-tentacles and utter darkness erupts from you with a heraldic scream of madness. All creatures within 10 feet centred from you must make an Intelligence saving throw, suffering 2d12 Psychic damage and becoming blinded until the start of their next turn. Succeeding the saving throw causes only half damage and the creature is not blinded.

At Higher Level. Increases the damage by 1d10 and range by 5 feet for each spell slot used above 2nd level.