As a reaction, which you use when another creature that you can touch or see within 10 meters makes an attack roll, an ability check, or a saving throw, you can use your wit to distract, confuse, and otherwise sap the confidence and competence of the creature. The creature makes the roll with disadvantage. The creature is immune if it is a construct or an undead, can’t hear you, or is immune to being charmed. You can do so after the roll but before any effects of the roll occur.
If the roll already has advantage or disadvantage, you cannot apply another instance of advantage or disadvantage and you must use this before the roll to cancel out any advantage or disadvantage.
You can use cutting words against one additional creature for each additional mana expended. The creatures must be within 5 meters of each other when you target them.