The Patronus Charm (Expecto Patronum) was the most famous and one of the most powerful defensive charms known to wizardkind. It was an immensely complicated and extremely difficult spell that channelled the caster’s positive emotions into a powerful protection and evoked a partially-tangible positive energy force known as a Patronus (pl. Patronuses) or spirit guardian. It was the primary protection against Dementors and Lethifolds, against which there were no other defences. There were two types
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