two identical twin sorceresses in flowing white robes, standing back‑to‑back inside a circular stone chamber covered in glowing runes, performing a summoning ritual, three light sources with symbolic meaning: a pure white key light from a hovering crystal between them (illuminating their faces from below with a soft, ethereal glow, casting upward shadows), a deep crimson fill light from the rune circle on the floor (saturating the lower halves of their robes and the stone with blood‑red warmth), and an electric blue rim light from a portal opening behind each twin (creating twin halos and separating their white hair and shoulders from the dark chamber walls), magical energy arcs connecting the three light sources, dust motes sparkle, the twins’ hands mirror each other’s gestures, shallow depth of field blurs the background runes, dramatic three‑light contrast, moody lighting with three colors, three light sources