A mysterious and deadly elf assassin stands poised, draped in dark, tattered robes that seem to blend with the shadows, their piercing red eyes glowing like embers in the darkness. Their hair is a wild tangle of white locks, with stray strands framing their pale, angular face, where high cheekbones and a sharp jawline define their otherworldly features. A few strands of hair fall across their forehead, partially obscuring their gaze, adding to the air of menace and stealth. The overall atmosphere is dark and ominous, with subtle hints of moonlight or lantern glow illuminating the surrounding darkness, casting eerie shadows on the walls behind them. The assassin's stance exudes confidence and deadly precision, as if ready to strike at a moment's notice, their very presence seeming to command attention and inspire fear.