Harry Potter and the Deathly Hallows: Quiz II (Advanced) by Mark ZurloSPOILER WARNING! This quiz covers all of Harry Potter and the Deathly Hallows. If you have not read the book, do not take this quiz! Question 1 (out of 10): What is the name of the charm that detects magical activity around under-seventeens? The Trace The Underage Spell The Tracker Dittany Charm FEN Learning is part of Sandbox Networks, a digital learning company that operates education services and products for the 21st century.