Observation Haki

As a bonus action, you may use your Haki to outwardly "feel" your surroundings and predict the movements of your enemies. This ability will last for 2 rounds in which you will have an advantage on perception checks and a +2 to your AC. After the 2 rounds; you cannot use it again for 4 rounds. At 14th level, your Haki Sense last 4 rounds instead of 2.

This can be done a number of times per wisdom Modifier long rest.