Dion's Tangled Tongue

Choose one creature that you can see within range. The target must make a wisdom save, or is else influenced to speak in a babyish mockery of its native tongue(s). The target cannot naturally or magically speak any learned languages, other than their racial ones. Creatures that can't be charmed are immune to this spell.

A charmed creature is not compelled to speak, but anything they do say is high pitched, loud and almost incomprehensible (listeners must make a DC 10 Wisdom check to understand them). The target has disadvantage on Charisma checks, and cannot cast spells with Verbal components.

As an action, the target may make a Wisdom saving throw to regain control of its tongue. On a successful save, the spell ends.

"Hewwo?"