For the duration, you sense the presence of magick within 10m of you. If you sense magick in this way, you can use your action to see a faint aura around any visible creature or object in the area that bears magick, and you learn its school of magick, if any.

The spell can penetrate most barriers, but it is blocked by 30cm of stone, 2.5cm of common metal, a thin sheet of lead, or 1m of wood or dirt.

(If you have the Ritual Casting feature, then this spell can be cast at its lowest level as a ritual – if you increase the casting time to 10 minutes, then this spell doesn't use spell slots.)