The wizarding world has its own hierarchy. As elsewhere, there are weak ones and there are strong ones. Spells differ in the same way. There is a level of spells that not every wizard will be able to perform. It will either not work at all, or the effect may turn out far from what was expected.
Spell "Expecto Patronum"
This spell is aerobatics in the world of magic. Only a strong wizard can perform it without harm to themselves and others. But even if, for example, a very young magician tries, he will not succeed. There may be several reasons for this: lack of experience, insufficient concentration, a dim memory.
"Expecto patronum" literally means "I'm waiting for a protector". It is necessary to imagine some of the most vivid memory or moment and say "expecto patronum". At the right concentration, a patronus is produced. If the spell was cast by a strong magician, then an animal representing the wizard will appear. If the forces are small, a thin trickle-shroud will appear.
Application areas
The expecto patronus spell is used to protect against dementors and other dark creatures that feed on yourhappy memories and emotions. Instead, they leave only emptiness, fear and bitterness. When they approach, the victim experiences genuine horror, so sometimes it is not possible to evoke any positive emotions in oneself. This requires truly tremendous willpower and well-trained concentration.
If the spell produces a shroud, it will protect the wizard from the Dementor. But if a strong wizard summoned his patronus, then the animal would be able to drive away the monsters, regardless of their number. This is the most common use.
Besides protection from dark entities, there is one more purpose of the spell. A speaking patronus can carry a message to another mage at a short distance. Also, with the help of a Patronus, you can light your way while traveling along an unknown and dangerous path.
Who is the Expecto Patronum for?
There is a misconception that only a good wizard can use this spell. But this is nothing more than someone's invention. The spell is for every magician, regardless of affiliation to one side or another.
The main point is the concentration of attention on the evoked feeling. It doesn't have to be emotionally positive. Only the feelings that the caster experiences are important.