Detect Magic (Ritual)

Components: V S
You sense the presence of magic within 30 ft
of you. If you sense magic in this way, you
can use your action to see a faint aura
around any visible creature or object in the
area that bears magic, and you learn its magic
school, if any.It is blocked by 1 ft of stone,
1 in of metal, a thin sheet of lead, or 3 ft of
wood or dirt.