As a Bonus Action, you can hold a grudge against a creature you can see within 30 feet of yourself that has dealt damage to you or one of your allies. This grudge lasts for 1 minute, until the target dies, or until you use this feature's Bonus Action again.
At the start of each of your turns while you hold a grudge, you gain a Grudge Battle Die, which is a d6. You can only have one such Battle Die at a time. You can only use your Grudge Battle Die to perform maneuvers targeting the creature against whom you hold a grudge.