Cut Fate

You cut into the threads of fate, briefly affecting the near future for the next minute. As a bonus action on each of your turns, you may roll 2d4. Each of your rolls on these die remain with you for the whole round, until they're rerolled at the start of your next turn. At any point, when a creature you can see within 60ft. of you makes an attack roll, ability check, or saving throw, you may choose to add or subtract a single rolled d4 onto that roll.