Curse of the Fey King

You invoke the power of a mighty fey spirit. A shimmering emerald coil of eldritch power disrupts your foe and steals from him the luck of his next few moments. It’s yours if you want it. When a creature rolls a D20 you can use your reaction to steal it. You target one creature and they do a INT saving throw. If they fail, you can steal that result. The target rerolls, and you use the stolen result for your next d20 roll. If you have a pact with the Archey: You gain a bonus to the stolen result equal to your CHA modifier.