The Sorcerer's Shadow (S03E11)

In Camelot, the fabled tournament comes with just one guideline: anything goes. As fierce fighters converge on the enchanted city, Gilli stands among them. Although he's not the biggest contender, Gilli is eager to compete and has a hidden advantage—magic. As he starts to tap into his extraordinary abilities, Merlin finds himself conflicted. Gilli's reckless use of magic not only endangers himself but also poses a serious threat to Camelot itself. Can Merlin persuade Gilli to reconsider his choices before disaster strikes?