Tongue-Tie

You magically enhance and extend a creatures state of shock, preventing them for forming cohesive words or sentences.
Choose one creature in range that can see or hear you (depending on material component). The target must succeed on a Charisma saving throw or be unable to speak beyond fragmented words and sentences. A creature with an Intelligence score of 4 or less isn’t affected.
They may repeat this saving throw at the end of each of their turns, ending the spell on a success. Upon three failures, the effect lasts until the end of the spell's duration.

At Higher Levels. The duration of this spell increases based on spell slot used. 1 hour at 5th, 8 hours at 7th, 24 hours at 9th