A striking poster featuring a powerful female Sith Lord from Star Wars, standing amidst a swirling storm of dark energy. Her fierce gaze pierces through the shadows, with glowing red eyes that match the hue of her ignited crimson lightsaber. She wears intricately detailed dark armor that glimmers under flashes of distant lightning, hinting at Sith symbols etched onto its surface. Her flowing black cloak billows dramatically around her, creating an aura of command and mystery. The background showcases a desolate alien landscape, with jagged rocks and a blood-red sky, adding to her menacing presence and highlighting her dominance over the dark side of the Force.