Perception (Wisdom)
Make a Perception check to notice clues, detect secret
doors, spot imminent dangers, find traps, follow
tracks, listen for sounds behind a closed door, or locate
hidden objects.
This skill is used against another creature’s Stealth
check or against a DC set by the DM. In most situations,
the DM uses your passive Perception check
result to determine if you notice a clue or an imminent
danger.