Prerequisites: Strength of 17
When you score a critical hit on a creature with a weapon attack, you can expend one Maneuver Die to shatter its focus. If it was concentrating, its concentration is broken, and for 1 minute, it has disadvantage on all Intelligence, Wisdom, and Charisma saving throws, and it cannot concentrate.
The creature makes an Intelligence saving throw at the end of each of its turns, ending this effect on a success.