Chatterbox: Chirp at Cricket

Harry Potter ACG

Does everyone remember what an ACG is? It's where one person posts a word starting with A, then the next person posts a word starting with, and so on. They can be spells, characters, places, as long as it's related to Harry Potter. I'll start. 

Aguamenti- conjures water

You don't have to put what it does, I just like to.:-)