Li Jin's Monstrous Insight

You analyze a creature that you can see within range. It must succeed on a Wisdom saving throw or you learn one of its resistances or immunities (your choice) and your next attack aimed at the creature deals an additional 1d4 psychic damage until the start of your next turn. If a creature succeeds on the saving throw, you can't target it again for the next 10 minutes.

When you reach 5th level, you can learn two resistances or immunities or can cast the cantrip on two separate creatures. When you reach 11th level the numbers increase to three and when you reach 17th level, the numbers increase to four.