Expelliarmus

Probably one of the spells most well known around the wizarding world, Expelliarmus is probably one of the most useful spells while dueling. Expelliarmus is a disarming spell, and is used to knock the opponent's wand from their hand. It is commonly used in the dueling club of Hogwarts and in many of the Harry Potter movies. Although called the 'Disarming Charm', it is only used to take wands from your opponent, whereas other spells can be used for summoning or pushing away an object. When powerful enough, it also may slightly k

Order of the Phoenix
Sectumsempra

Created by severus snape/half-blood prince
thumb|306px|left|A perfect Expelliarmus cast

Rating
Learning Level-3/8. Expelliarmus is quite an easy spell to learn. The disarming spell can be used and learnt at the Hogwarts dueling club, and more commonly, in the Defense Against The Dark Arts class taught by many Professors in Hogwarts history.