Focused [Perception]

Requires Observant Feat

As a bonus action, you can enter a state of heightened focus
which lasts for one minute. While focusing in this manner,
whenever you make a Dexterity saving throw or a Wisdom
(Perception) check, you can roll a d4 and add the number
rolled to the saving throw or ability check, as long as you aren’t
blinded. Once you enter this state, you can’t do again until you
finish a short or long rest.

Next Rank /Vigilant/