Theatrum Chemicum

Using noxious gases or spores you can summon and portray a scene of you imagination. This scene is only limited by the material used. 

While using this spell you gain advantage on charisma(performance) checks. Additionally, if anyone were to interact with the spell while active you can use a reaction to cause the spores or gas to attack the victim. The victim must roll a Constitution saving throw against your spell save DC. 

On a failed save, the creature takes 2d10 of poison damage. On a successful save, the target takes half as much damage.