You gain the ability to peer at a creature and magically discern how best to hurt it. As an action, choose one creature you can see within 30 feet of you. You immediately learn whether the creature has any damage immunities, resistances, or vulnerabilities and what they are. If the creature is hidden from divination magic, you sense that it has no damage immunities, resistances, or vulnerabilities.
You can use this feature a number of times equal to half of the sum of your Intelligence modifier and your proficiency bonus. Because of the way coding works on this website, this means that each time you use this feature, you must mark off 2 uses rather than 1. If you only have 1 use left, you cannot use this feature. You regain all expended uses of it when you finish a long rest.