Thia's Muffling Retort

You unleash a short remark with subtle enchantments at a creature you can hear within range. If the target can hear and understand you, it must succeed on a Wisdom saving throw or take 2d6 psychic damage and a magical gag forms in their mouth preventing them from speaking for 10 minutes. The target can make a Wisdom saving throw to remove the gag before the 10 minutes as an action. Casting a spell that includes a verbal component is impossible while gagged.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the spell's damage increases by 1d6 or the duration of the spell increases by 5 minutes.