Trace Magic

You focus in an area and detect any spells that have been cast in the area within the last 12 hours.

If you sense any spells cast, you learn the exact locations and the schools of magic.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can detect spells cast within an additional 12 hours for each slot above 1st. When you cast this spell using a spell slot of 4th level or higher, you know the exact spells cast as long as they are on one of your spell lists.