After receiving a letter, an orphan travels to a unique location and discovers they are a chosen one with magical powers. They craft potions, tame magical beasts, and cast spells. The movie ends after they have a magical duel with an older male to whom they are intrinsically connected

Edit:

Hint 1: >! The star of this movie was quite well known before it was made, but not for appearances in other movies!<

Hint 2: >! The movie was a box office failure when it was released, but has gained cult status!<

Hint 3: Genres on IMDb are >! Comedy and Horror !<

Hint 4 (big hint): >! Protagonist is in show business!<