Alymaine's Babble

You cause a creature you can see within range to babble incoherently. The target must succeed on a Wisdom saving throw or be unable to speak intelligibly for the duration. To all other creatures, the target's speech is incomprehensible gibberish. However, the spell does not impair the target's own ability to understand its speech.

As an action, the target can make another Wisdom saving throw to try to end the effect early. On a success, the spell ends on the target.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can target one additional creature for each slot level above 2nd. The creatures must be within 30 feet of each other when you target them.