Cobalt Soul Training

You can strike pressure points to extract crucial information about your foe, granting you insight about their combat ability. Whenever you hit a creature with three unarmed strikes, you mark them as analyzed. Whenever an analyzed creature misses you with an attack, you can immediately use your reaction to make an unarmed melee attack against that creature. This benefit lasts until you finish a short or long rest.

In addition, you learn the following attributes about the target: Damage Vulnerabilities, Damage Resistances, Damage Immunities, and Condition Immunities.