Conjures a Patronus, a silvery phantom shape, usually that of an animal, which is the embodiment of the positive thoughts of the caster. A Patronus will drive away Dementors.

• 用于召唤守护神，守护神是银色的幻影。形象通常是动物，是召唤者思想实质的化身。守护神可以赶走摄魂怪。