You automatically know when an aberration, celestial, elemental, fey, fiend, or undead creature has been in a space within 30 feet of you within the past 24 hours, though not which type of creature triggered this invocation.  Additionally, you gain an [expertise die](https://a5e.tools/node/77 "Click to view a local node.") on [[00-Balance Of Powers/3-Mechanics/6-Ability Scores/Perception|Perception]] checks, and you have [advantage](https://a5e.tools/node/130 "Click to view a local node.") on checks made to track these creatures. #secretsOfArcana #detection #perceptionBonus #trackingBonus