"Shhh!" I shush him with a finger against his mouth "If you give me a second to explain, mister, you'll find out. I've been experimenting with the Patronus charm and found out that it isn't a charm but summoning magic, calling spirits and sprites and such from different planes. I've been able to summon various elemental sprites and form contracts with them and I had a theory that spirits could harm dementors since they seem to only be partly corporeal as physical attacks can't harm them.