wizard, casting spells, unforgivable curses, dark arts, learning, focused expression, wand in hand, ancient spellbook, dimly lit room, stone walls, Hogwarts uniform, green Slytherin robe, intense gaze, magical glow, flickering candlelight, determined posture, half-length portrait, ominous atmosphere, detailed textures, high contrast lighting, 3/4 view, immersive environment, magical fantasy setting, intricate wand movements, spell incantation visible, ambient shadows, realistic, action moment.