Inside a colossal sci-fi cathedral on a hive world cathedral-ship, a majestic stained glass window glowing in the darkness. It shows a Sister of Battle in intricate powered armor calling the faithful to holy war. She stands against a background of distant stars, burning hive cities, and orbiting warships. Her armor has glowing energy runes and purity seals, one hand raised in a rallying cry while holding a bolter. Futuristic stained glass with luminous panels, subtle neon edges, and black lead framing, dramatic volumetric lighting mixed with cold starlight, epic grimdark sci-fi atmosphere, ultra detailed. <lora:stained-glass:1.0>