Hogwarts castle, dark arts classroom, ancient spellbooks, unforgivable curses, Avada Kedavra, Crucio, Imperio, wizard robes, wand in hand, casting spells, determined expression, magical green light, eerie shadows, stone walls, flickering torches, intense gaze, 3/4 view, atmospheric lighting, dramatic angle, high contrast, fantasy setting, magical atmosphere, sinister vibe, velvet curtains, wooden desks, parchment and quills, forbidden knowledge, secret learning, immersive environment, Hogwarts student, clandestine activity, moonlit night.