Hogwarts Legacy has plenty of spells for a young witch or wizard to learn as they journey through the Wizarding World. Spells acquired throughout the game range from the harmless to the downright deadly.
As Harry Potter fans know, there is no spell more deadly than Avada Kedavra. One of the three Unforgivable Curses, it has been used throughout the Potter franchise to kill several main characters, including Cedric Diggory, Professor Dumbeldore, and even Harry himself.
The spell can kill enemies in a single use, hence why it is known as the killing curse. In Hogwarts Legacy, it is the most powerful spell in the game, and as such, it can only be acquired fairly late on.