I think it'd be fun to concentrate an inflation spell in the flesh of the cheeks so the cute dumb balloon struggles to speak :3
Sloshy muffled words or outright unable to open their lips enough to speak at all and are reduced to "Mmph mmph!" and similar~
You know, I could see it. A lot of spells require Verbal Components, so Yeah, I could see a spell that slurs/muffles the speech of the target, making so any spells they try to cast have disadvantage. Needing to make a save to see if they can make the incantations correctly ;3
I'm thinking 2nd or 3rd level. It's a bit niche, but shutting down a caster is powerful late game. I'm thinking 3rd, same as Counterspell. As much as Counterspell guarantees 1 spell to fail, this gives a 50% of the next handful of spells to fail









