You suddenly have an uncanny understanding of all the creatures around you. Using a bonus action, you may analyze a creature within you sight, learning it's name, race, class, health and max health, and its number of spell slots (if applicable). You also learn a snippet of info about the race and class of the creature.
Favored Enemy
The creature that you analyze becomes your sole target, granting you advantage on attack rolls against that creature and forcing it to attack you. In using this ability, you can only attack this target until it is dead, immobilized, or unconscious.