The final trailer for Fantastic Beasts: The Crimes of Grindelwald just dropped and fans are freaking out. We introduced to a woman named … Nagini, who will one day become Lord Voldermort’s trusted serpentine killer and Horcrux. Up until the final trailer’s release, the actress who plays Nagini, Claudia Kim, was known only as a Maledictus — a witch who carries a “blood curse” that “destines her ultimately to transform into a beast.”