Autotune

Up to three creatures of your choice that you can see within range must make Charisma saving throws. A target can choose to fail the saving throw. Whenever a target that fails this saving throw speaks  sings or in any way uses it’s voice before the spell ends, the targets is unable to say anything that isn’t grammatically correct and the targets voice will be auto tuned. The target also have advantage on performance checks and disadvantage and intimidation checks using their voice.

The spell can target more creatures when you reach higher levels: four targets at 5th level, five targets at 11th level, six targets at 17th level,