Multiple choice general knowledge Lock Legs spell mobicorpus Locomotor mortis imperius Incendio Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Leg-Locker Curse (Locomotor mortis) locks the victim's legs together, preventing movement. Mobicorpus and Levicorpus are body-manipulation spells, Imperius is the mind-control curse, and Incendio produces fire.