Patronus

The opposite of a Dementor. A Patronus is formed by an extremely happy thought. The Patronus Charm is worded like so:
EXPECTO PATRONUM
Every witch and wizard has there own different kind of Patronus— like Harry’s— his is a stag, while Hermione’s is an otter.

Luna Lovegood: Oh, look, Harry, my Patronus is a rabbit!
Harry: Good job, Luna.

by EM52 April 27, 2020