you sense the presence of magic within 40 feet 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.

The spell can penetrate most barriers, but it is blocked by 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt.

You lose your sight in the progress of gaining the wise mans vision.