Blistering Invective

You unleash an insulting tirade so vicious and spiteful that enemies who hear it are physically scorched by your fury. When you cast this spell, each creature of your choice within 30 feet of you that can hear you must make a Dexterity saving throw. On a failed saving throw, a target takes 1d10 points of fire damage, and can't take reactions until the end of its next turn. Moreover, until the end of its next turn, when it makes an attack roll, saving throw, or ability check, the target must roll a d4 and subtract the number rolled from the attack roll, saving throw, or ability check. On a successful save, a target takes half as much damage and suffers none of the spell's other effects.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the fire damage increases by 1d10 for each slot.